Enhanced Visibility and Safety: Equip your bicycle with handlebar lights featuring an intelligent brake sensor that automatically adjusts brightness, ensuring high visibility and safety during night rides. Waterproof Design: With an IPX6 waterproof rating, these bike lights are built to withstand adverse weather conditions, making them ideal for outdoor cycling adventures. Versatile Lighting Modes: Choose from 5 different lighting modes to suit your environment and battery life needs, providing flexibility and improved usability in various conditions. Product Name: R0 Bike Light Waterproof Rating: IPX6 Built-in Battery: 3.7V 250mAh Polymer Battery Battery Life: Approximately 640 hours Charging Input: 5V2A USB Type-C Operating Temperature: -10C to 60C Operating Humidity: Up to 80% Features: Synchronized frequency mode, brake sensing, automatic sleep, vibration activation, 5 installation options Color: Black Material: PC + ABS Package Contents: 2 x Handlebar Lights 1 x Charging Cable 1 x Wrench Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by 13 cm.