【Digital Battery Display】LED screen shows real-time battery level, allowing you to monitor power usage effortlessly. 【Button for Easy Mode Switching】When turned off, clicking the button will enter the light sensing mode, high brightness mode, low brightness mode, and flash mode. 【Intelligent Light Sensing】Features a light-sensing mode that adjusts brightness based on the surrounding environment for optimal visibility. 【Compact Design】Measuring 101mm x 30mm x 25mm, this lightweight and compact bike light is easy to mount and carry. 【Long-lasting Battery】Equipped with a 1500mAh battery for extended use during your rides. 【High Brightness】Delivers up to 400 lumens of bright light to ensure clear visibility on the road. Specifications: Material: High-strength plastic Battery capacity: 1500mAh Charging interface: Type-C Dimensions: 101mm x 30mm x 25mm Lighting modes: 4 modes