Taillights

The Stick Drive is an incredibly thin and lightweight rear bike light equipped with eight super bright LED emitters. Its minimalistic design is optimized for versatility and ease of use. A simple o-ring securely straps it to a bicycle seatpost, and an innovative magnetic attachment separates the light from the mount for quick charging accessibility. It’s equipped with an integrated USB stick for cable-free charging, providing up to an impressive 23 hours of runtime. The Wide Angle Optics lens creates up to 270° of visibility, and the light outputs up to 30 lumens—this includes a disruptive Daytime Flash feature among its seven modes. With its narrow design and compact mount, the Stick Drive is the perfect taillight for maintaining aerodynamics and also attaching to seatposts with minimal space—like a dropper post. Designed and produced in-house, the Stick Drive is engineered for long-lasting durability and built to be highly water resistant. - Max 30 lumens - USB Rechargeable and magnetic clip-on mount - Wide angle optics with 270° visibility for maximum safety - Aero and round seatpost compatible - Slim design, lightweight and durable - Magnetic clip-in mount - IPX7 water resistant

To further rider safety and visibility, the CherryBomb 100 employs a custom-made, built-in reflector that allows the rider to be night time visible even when the taillight is in the off position. Clip and bike mounts are included for flexible mounting options. Features - Lumen Output: 100 - 4 Modes with a Run Time up to 136h - 2 x AAA Alkaline Battery Powered - Weight: 82g - Battery: 2 x AAA Alkaline - Highly Visible up to 1 Mile - 100 Lumen Daylight Visible taillight - Water / Dust Resistant IP64 Rated Run Time - Fast Flash—96:00h - Pulse Flash—136:00h - Steady High—72:00h - Steady Low—127:00h

Portland Design Works' Radbot 1000 Taillight shines brightly to enhance your visibility when the sky turns dark. It boasts a 1-watt LED with three modes and a precision reflector to notify others of your presence. And, the Radbot includes mounts for a rack, seatpost, seatstay, and backpack, so you can put it wherever you want. - 1.0 watt red LED made by Nichia - 3 Modes: zZz pop, Cornea Blitz and Rock Steady for up to 30 hours run time - Large precision reflector - Includes both Stayputnik quick release and Rack mounts - Weatherproof exterior for all season riding - Runs on 2xAAA batteries (included) - Weight: 62 g (2.2 oz) - Lifetime PDWarranty

NiteLink Wireless Technology allows the rider to pair and simultaneously power on/off the Lumina Max headlight and Omega EVO 300 taillight wirelessly. Lumina Max headlight and NiteLink Remote sold separately. - Maximum 300-lumen output - Run time: 6:00—36:00hrs - Charge time: 2:15hrs - Group Ride Mode: Be seen without distracting fellow cyclists - 2 light levels, 3 flash modes - FL1 Standard IP64 Water Resistant - 79g Includes: - Daylight visible tail light, easy on/off seatpost strap mount, and USB charging cable

The most powerful line of single LED tail lights just got even brighter. Sporting an aggressive design and powerful output, the Hotshot Pro™ 200 is engineered from the ground up to stand out in the brightest of daytime and at night with intense 200 lumen flashes. Exclusive 2 button design lets you fully adjust the tempo of each flash mode to maximize motorist awareness. It even senses day and night, automatically adjusting the brightness of the flashing modes. Every bit the road cyclist’s tail light, its extra-wide beam lens maximizes your presence from afar, and its new low-profile flexible mount makes it easy to use on standard and aero seat posts. Get the most out of your ride with up to 210 hours of run time. (patent pending) - Powerful and efficient single LED blasts 200 lumen flashes (120 lm steady) - Engineered to make you stand out in broad daylight and at night - Built-in 24/7 Safety Technology® gives you a powerful selection of 6 day and night modes (Steady - Zoom - SteadyPulse® - Triple Flash - DayLightning® - Random Flash) - Freely adjust the flash tempo of the flashing modes and the brightness of Steady mode with the simple 2 button interface (patent pending) - All flashing modes feature Adaptive Flash™ that sense day and night, automatically adjusting to the optimal brightness - SteadyPulse® mode features a steady beam to help motorists gauge their distance while overlapping pulses keeps them alert at night - DayLightning® mode emits lightning-like flashes to highlight your presence in the brightest of daytime hours - Zoom mode signals those around you with gentle changes in brightness - Enhanced Cycling Optics™ expands your presence with an extra-wide and long-range beam - USB rechargeable - Low battery indicator - Light mode memory saves the mode you're in before the light is turned off - Compact, water-resistant design weighs only 54 grams - Flexible seat post mount fits most standard and aero seat posts - 2 ~ 210 hours of run time Patent pending. *Features and specs are subject to change without notice.

250 lumens packed into an unbelievably compact form, the all-new Hypershot 250 is the latest and greatest from the originators of the most powerful line of LED bike tail lights. This powerful dual LED tail light puts out ultra-bright 250 lumen flashes in an extra-wide and long-range beam pattern that makes cyclists stand out both day and night. The 2 button design on the Hypershot lets cyclists control the speed of each flash mode and the brightness of the steady mode to their preference. And with 7 unique lighting modes and a run time range of 2 to 200 hours (yes, really), you won’t go unnoticed. (patent pending) - Powerful 250 lumen flashes to be seen day and night - Unique 2-button design lets you adjust the speed of each flash mode and the brightness of the Steady mode - Dual LED optics throws a long-range, extra-wide beam - Daytime visible flashes make you stand out on busy streets - 7 lighting modes for day and night use (Steady - Zoom - SteadyPulse® - Bzzz Flash - Triple Flash - DayLightning® Flash - Random Flash) - SteadyPulse® mode features a steady beam to help motorists gauge their distance while overlapping pulses keeps them alert at night - DayLightning® flash mode bursts lightning-like flashes to make you stand out in broad daylight on busy streets - Zoom mode signals those around you with gentle changes in brightness - All-new Bzzz Flash mode alerts those around you with highly visible fast buzz-like flashes - Hard seat post mount and seat stay mount securely attaches onto seat posts and seat stays - Light mode memory saves the mode you're in before the light is turned off - Durable and weighs only 60 grams - IP64 water-resistant for use in all weather conditions - USB rechargeable with 2 to 200 hours of run time and 3 hours fast charging - Low battery indicator alerts you when a charge is needed Patent pending. *Features and specs are subject to change without notice.

Lezyne Ebike Super Bright Alert Taillight: Powerful, low-profile StVZO certified e-bike taillight with custom-programmed Alert Technology. It features 10 high-output emitters that provide a constant 12 lumens and then 24 lumens when deceleration is detected. Its co-molded design is constructed from durable Composite Matrix material, which provides an IPX7 waterproof rating. It comes with an integrated 130 cm (51.2 inches) cable that connects to the e-bike’s motor/battery system. Stainless steel mounting hardware is included. Compatibility: 6 – 12v input, 1.2w / 2.4w (Alert mode). Download the manual below for further installation and compatibility details. - Alert" brake light function - STVZO optimized lens - 130cm cable - Includes stainless steel hardware

Minimal and mighty! The USB rechargeable Asteroid tail light from Portland Design Works mounts in seconds and shines super brightly with high quality optics so you can be seen. The double-click lens prevents accidental ons and offs. Ride up to 35 hours before needing a charge. Pairs nicely with the Asteroid Headlight - also available as a light set. - 3 Modes (burn time): Flash (35 hrs), Pulse (6.5 hrs), Steady (4.5 hrs) - Weatherproof exterior for all season riding - Micro USB recharging cord included - Weight: 76 g (2.7 oz)

Sporting an aggressive new design and the most powerful single LED taillight available, the Hotshot Pro™ 150 is engineered from the ground up to stand out in the brightest of daytime hours and at night with intense 150 lumen flashes. Exclusive 2 button design lets you fully adjust the tempo of each flash mode to maximize motorist awareness. Every bit the road cyclist’s tail light, its extra-wide beam lens maximizes your presence from afar and a specially treated internal body disperses a radiant glow to keep nearby motorists alert. Get the most out of your ride with up to 210 hours of run time. (patent pending) - Powerful and efficient single LED blasts 150 lumen flashes (90 lm steady) - Engineered to make you stand out in broad daylight and at night - Built-in 24/7 Safety Technology® gives you a powerful selection of 6 day and night modes (Steady - Zoom - SteadyPulse® - Triple Flash - DayLightning® - Random Flash) - Freely adjust the brightness of Steady mode and the flash tempo of the flashing modes with the simple 2 button interface (patent pending) - SteadyPulse® mode features a steady beam to help motorists gauge their distance while overlapping pulses keeps them alert at night - DayLightning® mode emits lightning-like flashes to highlight your presence in the brightest of daytime hours - Zoom mode signals those around you with gentle changes in brightness - Enhanced Cycling Optics™ expands your presence with an extra-wide and long-range beam - Specially treated internal body disperses a radiant glow to keep nearby motorists alert - USB rechargeable internal battery - Low battery indicator - Light mode memory saves the mode you're in before the light is turned off - Compact, water-resistant design weighs only 59 grams - Seat post and seat stay mounts included - 2 ~ 210 hours of run time Patent pending. *Features and specs are subject to change without notice.

The TL 6.0 will help keep you safe and seen from behind (210-degree visibility). The TL 6.0 operates on 2 AAA batteries (included) for up to 60 hours on flash. Features - Lumen Output: 25 - 4 Modes with a Run Time up to 60h - 2 x AAA Alkaline Battery Powered - Weight: 70g - Battery: 2 x AAA Alkaline - Increased safety with 210° of Visibility - Budget Friendly Rear Lighting System - 25 Lumen taillight with Eye Catching Flash Patterns - Water / Dust Resistant IP64 Rated Run Time - Up to 60h

-PB power array and reflector provide visibility for up to 1 mile -Steady, Superflash and Courtesy flash modes -Ultra compact case is weatherproof, lightweight, and durable -Rear rack and seat post mounts included -Up to 150 hours of run time on 2 AAA batteries (included) -85 grams

350 lumens packed into an unbelievably compact form, the all-new Hypershot 350 is the latest and greatest from the originators of the most powerful line of LED bike tail lights. This powerful dual LED tail light puts out ultra-bright 350 lumen flashes in an extra-wide and long-range beam pattern that makes cyclists stand out both day and night. The 2 button design on the Hypershot lets cyclists control the speed of each flash mode and the brightness of the steady mode to their preference. And with 7 unique lighting modes and a run time range of 2 to 200 hours (yes, really), you won’t go unnoticed. (patent pending) - Powerful 350 lumen flashes to be seen day and night - Unique 2-button design lets you adjust the speed of each flash mode and the brightness of the Steady mode - Dual LED optics throws a long-range, extra-wide beam - Daytime visible flashes make you stand out on busy streets - 7 lighting modes for day and night use (Steady - Zoom - SteadyPulse® - Bzzz Flash - Triple Flash - DayLightning® Flash - Random Flash) - SteadyPulse® mode features a steady beam to help motorists gauge their distance while overlapping pulses keep them alert at night - DayLightning® flash mode bursts lightning-like flashes to make you stand out in broad daylight on busy streets - Zoom mode signals those around you with gentle changes in brightness - All-new Bzzz Flash mode alerts those around you with highly visible fast buzz-like flashes - Hard seat post mount and seat stay mount securely attaches onto seat posts and seat stays - Light mode memory saves the mode you're in before the light is turned off - Durable and weighs only 60 grams - IP64 water-resistant for use in all weather conditions - USB rechargeable with 2 to 200 hours of run time and 3 hours fast charging - Low battery indicator alerts you when a charge is needed Patent pending. *Features and specs are subject to change without notice.

The LED Laser Drive rear light enhances nighttime safety by projecting "lanes" on the road behind you. Two laser lines establish your presence by creating a lane that shows motorists where you are and where you're headed. Two solid modes and five flashing modes ensure you're always seen, and recharges are made convenient through USB. Silicone rubber mounting strap included.

Put this little bright spot anywhere—your belt, your backpack, your seatpost—and ride on. The Flashback is your go-to savior, packing a mighty “I’m here!” punch to keep you visible on the streets. With its belt clip, you can literally clip it on just about anything, and its compact size makes it a total no-brainer for keeping your ride safe and your street-cred high. - Compact, bright, and waterproof. - Built-in fabric belt clip makes it a clip-anywhere taillight option (seatpost mount included). - Four operating modes: Steady (10 lumens), Power Flash (20 lumens), Disco Flash (14 lumens), Eco Flash (5 lumens). - 2- to 20-hour runtime, depending on mode. - Tested and approved for the following Specialized helmet models: Align, Ambush Comp, Chamonix, Propero II, Echelon II

When you absolutely, positively need to be seen, day or night, rain or shine, trust CatEye's brightest rear safety light. The ViZ450 features 5 LEDs, 300-degree visibility, OptiCube lens technology, and makes sure you stand out with the power of Daytime Hyperflash mode. - 5 LEDs (450 lm) - Highly visible during daytime - 300 degree visibility - Long rear beam projection - OptiCube lens technology - Lithium-ion rechargeable battery - USB rechargeable (Micro-USB cable included) - Low battery indicator - 4 modes *Charging time: 3.5h - Mode memory function - Battery Auto Save (The mode automatically changes to flashing when the battery power gets low.) - New seat post bracket SP-15 which fits contemporary (kammtail) aero seatpost - Snap System Run time: - Constant (40 lumens):5 hrs - Flashing (40 lumens):65 hrs - Group Ride (130 lumens):10 hrs - Daytime Hyperflash (450 lumens):14 hrs

Planet Bike's Spok Taillight ensures you'll be seen for up to a mile! It boasts a super-bright LED and a translucent casing that allows 220 degrees of visibility. The rubber strap can be used to mount the Spok on seatposts or odd shaped tubes of all sorts and sizes. And, this little baby runs up to 100 hours with the included CR 2032 battery. There's even a keychain hole for portability!

- Modes include High Flash, Medium Steady, Low Steady, DayTime Pulse, NightTime Pulse, Economic Flash - Fully USB rechargeable: no batteries to buy or replace - Runtime up to 11 hours 15 mins - Memory function: light turns on at the last mode it was turned off - Power saving function: 10% power or less, lights will automatically switch to lowest lumen output - Built-in battery indicators: RED = less than 25%, GREEN = fully charged - Side illumination ports

The NiteRider Sentry Aero 260 is a lightweight, aero taillight featuring dual LED light strips to deliver 260 lumens of Daylight Visible red light. An inner and outer lens design helps to shape light output, producing long-range visibility when viewed directly from the rear, but also providing ample surrounding light to the peripheral, making the Sentry Aero 260 visible from nearly any angle. - Daylight Visible Flash (DVF) - 260 lumen super bright tail light - Group Ride Mode – be seen without distracting fellow cyclists - Easy on and off Aero seat post strap mount with quick release tab - Aero seat post strap included - Convenient USB rechargeable - Super bright Daylight Visible Flash mode - Innovative Aero shape with excellent side visibility - FL1 Standard IP64, dust and water-resistant WARRANTY - The Sentry Aero 260 is backed by NiteRider's lifetime warranty that covers any defects in material and workmanship, mechanical components (housings, covers, mounts and fasteners) and LEDs. SYSTEM INCLUDES - LED Tail Light - Seat post Mount - USB Cable

Make sure you have excellent rear visibility at night with the Blinky 3. This sweet taillight aims 3 bright LEDs directionally to provide visibility from up to a mile away. Its soft-touch power switch accesses flashing or steady modes for up to 100 hours of run time on the 2 AAA batteries (included). And, it includes seatpost and seatstay mounts.

Lezyne Stick Drive Taillight: Innovative cycling taillight featuring an integrated machined aluminum Ø35.4 MM seat clamp. By replacing the seat clamp with a slender, lightweight design, the Stick Drive Seat Clamp reduces hardware and saves space—ideal for mountain bikes with dropper-style seatposts. Eight high-powered LED emitters offer top visibility and seven output modes, including a daytime flash mode (up to 30 lumens) and our Wide-Angle Optics for up to 270-degree of visibility. An innovative magnetic interface allows the light to easily detach from the mount for quick and easy charging accessibility. The light itself is housed in a co-molded Composite Matrix body that’s durable and features an IPX7 waterproof rating. A built-in USB stick allows for cable-free charging and up to 23 hours of runtime. - 30 lumen - USB rechargeable - 34.9-35.4mm seat clamp mount with magnetic clip - 2 solid and 5 flash modes

Long battery life combined with simple, tool-free mounting makes MSW Mouse lights a great economical pick to be seen on the road. - Simple, tool-free mounting on bars from 22.2 - 35mm - 3 lighting modes: high, low, flash - CR2032 battery included

Compact, bright, and versatile, the ViZ150 stands out with high visibility from OptiCube lens technology and Daytime Hyperflash mode in an economical package. - 3 LEDs (150 lm) - Highly visible during daytime - 300 degree visibility - Long rear beam projection - OptiCube lens technology - Lithium-ion rechargeable battery - USB rechargeable (Micro-USB cable included) - Low battery indicator - 4 modes *Charging time: 3h - Mode memory function - Battery Auto Save (The mode automatically changes to flashing when the battery power gets low.) - New seat post bracket SP-15 which fits contemporary (kammtail) aero seatpost - Snap System Run time: - Constant (20 lumens):5 hrs - Flashing (15 lumens):70 hrs - Group Ride (50 lumens):11 hrs - Daytime Hyperflash (150 lumens):15 hrs

Engineered for the ultimate road cyclist, the Hotrod™ 90 unleashes a powerful 90 lumens of flashing output for unprecedented night and day cycling safety. Its cluster mounted array of LEDs work in unison for an extra-wide and powerful output, maximizing your presence on the demanding roads. Be seen all the time with 24/7 Safety Technology™, an exclusive set of solid and flashing modes to increase your safety when cycling, night and day. Every bit the road cyclist’s tail light, the Hotrod 90 uses a Versatite™ flexible mount compatible with most seat posts including aero styles. Performance - 90 lumen red tail light with 6 lighting modes engineered for use on roads and commuting - Continuous array of LEDs work in unison to illuminate an extra-wide and powerful glow - Ultra low profile, water-resistant design only weighs 35 grams - USB rechargeable, internal battery lasts up to 100 hours - Water-resistant design - 1:30 ~ 100 hr run time - System weight: 35g Technology and Safety - 6 modes: High Flash - SteadyPulse® - Zoom - Group - Low Flash - High Steady - SteadyPulse's steady beam helps motorists better gauge their distance from you while the overlapping pulses keep them alert of your presence - Sturdy and flexible Versatite™ mount attaches to most seat posts and seat stays, including aero styles *Features and specs are subject to change without notice.

The PDW Kepler eBike Tail Light offers up 220 degrees of visibility. Compatible with any 6V-15V system, this light has 3 super-bright red LED's. Equipped with a pre-installed Bosch plug, the Kepler eBike Tail Light is ready to plug directly into any Bosch eBike system. The Bosch plug can also easily be clipped off for direct wiring into other eBike systems. - Seatpost or seatstay mounting - 220 degrees of visibility - 25 Lumens - 48" cable length - Remove Bosch plug to work with any 6V-15V e-bike system

Be seen with CatEye's Omni 3 Taillight, which uses Omni Directional Technology for 360 degrees of visibility. Three super-bright LEDs light up in three different modes so you can customize the pattern and get run times up to 200 hours. Plus, CatEye's tool-free mount makes installation a breeze.

The Rojo 100 USB rechargeable bike tail light is designed to keep you safe and visible on every ride, day and night. It’s packed with up to 100 lumens of power so you’ll be sure to be noticed on your daytime rides and commutes whether you’re on the road, bike path or turning the corner downtown. Four precision engineered lighting modes let you select the perfect optimized optical output. - 2 high output Cree XB-D LEDs provide four modes for every kind of ride (Steady, Pulse, Courtesy & Superflash Turbo settings) - See the light in action here! - Tested to FL1 standards - Run times: 5 hrs (Steady – 25 lm), 10 hrs (Pulse - 50-90 lm), 12 hrs (Courtesy - 30-90 lm) and up to 15 hrs (Superflash - Turbo - 100 lm) - Provide 270° of visibility - Designed for when you ride the most…during the daytime. The Rojo 100 is engineered to be highly visible even in bright, sunny conditions - Water resistant – Don’t be worried to ride in the rain, the Rojo 100 is dust & water resistance rated to the IP66 standard - Fast recharging - 650 mAh lithium polymer battery charges in 2.5 hours with micro USB type C cable (included) - Multiple mounting options - Includes rear rack, seat post, seat stay and clip mount flexible mounting options - 48 grams

This is the “Next Generation” of our compact and versatile fast-mounting bike lights. Their mission: to help cyclists boldly go where no cyclist has gone before. - High output surface mounted LED provides steady, Courtesy, and Superflash modes - FL1 tested run time: 4.5 hrs (steady – 5 lm), 7 hrs (Courtesy™ 1.5-4.5 lm) and up to 22 hrs (Superflash - 5 lm) - Side cut outs provide 270° of visibility - Dust & water resistance rated to IP54 standard - 270 mAh lithium polymer battery charges in 2 hours with micro USB cable (included) - Diminutive size and fast mounting rubber strap mounts to multiple mounting locations in seconds without tools - 25 grams

The PDW USB-rechargeable Io taillight has two super-bright LEDs for a great value, and offers a super-quick charge time of only 2.5 hours. The Io has 3 different modes, steady, flash, and pulse, and is perfect for urban riding. - 3 modes (runtime) Steady (10h) Flash (20h) Pulse (20h) - Seatstay mount included - UV-proof rubber strap bracket for easy on and off included - Includes Micro USB-recharging cord

Made for the ultimate road cyclist, the HotrodTM 120 taillight unleashes a powerful 120 lumens of flashing output for unprecedented night and day cycling safety. High-intensity cluster-mounted array of LEDs work in unison for an extra-wide and powerful output, maximizing your presence on the demanding roads. Using Cygolite’s 24/7 Safety Technology® with exclusive solid and flashing modes to increase your safety, the new Hotrod Rear 120 includes new Bzzz Flash mode to stand out even more both day and night. Every bit the road cyclist's tail light, the Hotrod 120 uses a VersatiteTM flexible mount that conveniently attaches to most seat posts including aero styles. Performance - 120 lumen red tail light with 7 lighting modes engineered for road cyclists - Continuous array of LEDs work in unison to shine an extra-wide and powerful glow - Ultra low profile, water-resistant design only weighs 35 grams - USB rechargeable with 1:15 to 70 hours of run time, and 3 hour recharge time. Technology and Safety - Built-in 24/7 Safety Technology® gives you a powerful selection of 7 night and day modes (DayLightning® High Flash, High Steady, Group Low Steady, SteadyPulse®, Zoom, Bzzz Flash, Low Flash) - SteadyPulse® mode features a steady beam to help motorists gauge their distance while overlapping pulses keep them alert at night - Zoom mode signals those around you with a gentle change in brightness - All-new on Hotrod, Bzzz Flash mode alerts those around you with highly visible fast buzz-like flashes - Low battery indicator alerts you when a charge is needed - Light mode memory saves the mode you're in before the light is turned off - VersatiteTM flexible mount conveniently attaches to seat posts including aerobars - Designed, engineered, and assembled in the USA RUN TIMES: - Group (low steady): 70 hr - High Steady: 1:15 hr - Zoom: 5 hr - SteadyPulse®: 5:30 hr - Low Flash: 30 hr - Bzzz Flash: 8 hr - DayLightning® Flash: 3 hr CHARGE TIME: - 3 hrs (depending on the charger used) MOUNTING: - Flexible seat post mount BATTERY: - Built-in Li-Ion SYSTEM WEIGHT: - 35g *Features and specs are subject to change without notice.

Serious road riders put in serious miles. Most of those miles occur in the daytime, when bright ambient conditions mean you need huge lumens numbers to be seen by motorists. But there's no reason a super-bright taillight can't look the part on the fastest road bikes. You invest in the best road bike technology--you deserve an equally fast taillight. Packing a huge punch with 250 lumens, the Flux 250R taillight is visible at more than 1 mile (1.5 km) in the brightest daytime conditions. Here in Morgan Hill, California we get those conditions all the time, this is the taillight we made for ourselves, and for you. - Designed to fit round and D-shaped seatposts. - Disco Flash mode: 250 lumens for 8:00 hours - Eco Flash mode: 25 lumens for 60:00 hours - Hybrid spherical lens and Fresnel lens over three high-power LEDs to send lumens for mile, or kilometers. - IPX7 waterproof means this light will be there when you need it, even in the hardest rain. - Includes 3 different size EPDM o-rings to fit a wide variety of seatposts. 2 o-rings included per size for spares. - Massive 1000mAh battery recharges via included micro USB cable in 2:15 hours. - Overmolded bezel for excellent side visibility. - Power Flash mode: 250 lumens for 8:00 hours - Steady High mode: 100 lumens for 3:00 hours - Steady Low mode: 25 lumens for 12:00 hours - Three CREE XBD 901 LEDs for maximum brightness and efficiency.