Our bike light is bright enough to remind the surrounding pedestrians and vehicles in all directions and protect the safety of the-rider. There are multiple lighting modes to choose from, like strong, weak or fast flash. This bike lamp is designed with a clip, allowing you to easily attach it to your backpack. And more, the rubber strap ensures a quick and hassle-free installation. By the advantages of waterproof, high durability and sturdy, our high-lumens bike light can withstand extreme weather conditions, like rain, snow, frost and more. High-capacity rechargeable battery with an extra-long run time. And more, the bike rear light can be charged by computer, power bank and so on. Quick 40-minute charging time for on-the-go use. Lightweight design for easy carrying without any burden. Small and portable bicycle light that doubles as a flashlight. Item Name: Bicycle Rear Light Material: ABS, AS Shell, COB Lamp Beads Brightness: Front Light: 130 Lumens Tail Light: 80 Lumens Battery: 120mAh Working Time: 2-3.5h Lighting Mode: Strong Light/Weak Light/Fast Flashing Features: Waterproof, Lightweight, Compact Size Details: L: 3.7cm/1.46", W: 4.9cm/1.93", H: 3cm/1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Color Red/White: 1 x Bicycle Rear Light Or Color White + Red: 1 x Bicycle Rear Light(Red) 1 x Bicycle Rear Light(White)