Enhanced Safety: Our bicycle tail lights are designed to ensure your safety during night rides. By adopting high-quality lamp beads design, our bike light provides super bright light to remind the surrounding pedestrians and vehicles. Weather Resistant: By the advantages of waterproof, high durability, and weather-resistance, our high-lumens bike light can withstand extreme weather conditions, like rain, snow, frost and more. Large Battery Life: Equipped with a built-in large capacity lithium battery, our bicycle tail lights offer long-lasting battery life. They are USB rechargeable and compatible with most phone chargers for added convenience. Simple Installation: Compared with other similar products, our bicycle tail light is easy to install, no need of extra tools. It can better attract the attention of other cyclists and make each other more riding safety. Versatile Use: Ideal for bicycles, mountain bikes, and outdoor night riding, these multi-functional warning tail lights serve as an essential safety warning device to ensure your visibility on the road. Item Name: Bicycle Tail Light Material: Plastic Battery Capacity: 450mAh Features: Ultra-bright, Easy Installation, Compact Size Size Details: L: 7.7cm/3.03", W: 3.5cm/1.38", H: 3.3cm/1.3" (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: 1 x Bicycle Tail Light 1 x Charging Cable