Usage Tips:Enhanced Visibility and Safety: Equip your bicycle with the handlebar lights, featuring an intelligent brake sensor that automatically adjusts brightness when , ensuring high visibility and safety during night rides. Waterproof and : With an IPX6 waterproof rating, these bike lights are designed to withstand adverse weather conditions, making them perfect for outdoor cycling adventures. Versatile Lighting Modes: Choose from 5 different lighting modes to suit your environment and battery life needs, enhancing flexibility and usability in various lighting conditions. Name: R0 traffic light with the same frequency Waterproof Level:IPX 6 Host built-in battery: 3.7V250 mAh polymer battery Battery life: about 6-40 hours Charging input: 5V-2A USB Type-C charging Working environment temperature: -10C-60C Working environment humidity: 80% Advantages: same frequency + linkage mode/brake sensing/automatic sleep/vibration self-start/5 installation methods Colour:Black Material:PC+ABS Package Contents: 2 x Handlebar Lights 1 x Charging cable 1 x Wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.