Smart Motion Sensor & High LED: High-precision accelerometer detects braking, with automatic bright illumination for 2 seconds. Synchronous Mode: Sync multiple bike lights for group riding by double-tapping to activate, ensuring uniform blinking patterns. Automatic On/Off: Intelligent mode turns lights on or off based on motion, with a 400mAh battery and USB Type-C charging. Light-Sensitive: Automatically adjusts to ambient light, lighting up in dark areas and conserving power in bright environments. Buttonless Design: Operate through a touch-sensitive lampshade for easy power on/off and mode switching.