Description: Name: Bicycle Tail Light is designed for mountain bikes and road bikes, providing safe warnings during night rides. It features a flowing navigation light and can be charged via USBMaterial: The outer shell of the tail light is made from ABS plastic, ensuring its longevity and resistance to wear and tear. Advanced Lighting: Equipped with COB LED lights, this bicycle rear light provides bright illumination for enhanced visibility on the road, ensuring your safe during night ridesWide Operating Conditions: This bicycle light operates efficiently in temperatures ranging from -30C to 65C with a humidity less than 80%. It can also be stored safely in temperatures between -45C to 75DegreeSize: The Rear Bike Light Size are approximately 3.35inchx1.26inch Specification: 8.5cmx3.2cm/3.35inchx1.26inch Size Chart: With a battery capacity of 300mAh, this bicycle tail light can be conveniently charged via USB. A full charge takes about 40 minutes, making it quick and easy to prepare for your ride Package Includes: 1Bike Tail Light Note: Please allow slightly errors 1-2cm differences due to manual measurement.