With max 350 led lumens and improved eye-catching warning flashing mode, TR350 offers great daytime visibility for riders. The light comes with an intelligent brake sensor for urban riding and auto on-off function for convenient operation. There are also 5 other modes, 3 constant and 2 flashing modes, for various riding environments. It is easy to use with the USB-C charging port and compatible with round and aero seatposts. Daytime and night visible Warning flashing mode with eye-catching flashing pattern and max 350 led lumens to maximize your daytime visibility 6 different modes for various daytime and night riding environments Built-in motion sensor for brake detection and auto on-off function When activated, the light will switch to 100 lumens output for 2s to increase your visibility when detecting braking. The light will switch off automatically after staying still for 2 minutes and turn on with vibration Internal side stripes for brighter side visibility Providing brighter side visibility with the internal stripes reflecting the light USB-C charging port Reversible connector to charge the light easily and no need to flip around looking for the correct orientation Product Features 1. Eye-catching flashing with max 350 LED lumens, providing great visibility for daytime riding 2. Built-in motion sensor for brake detection and auto on-off function when activated 3. Auto power save and indicator for low battery 4. USB-C charging port for convenient use 5. Solid and lightweight anodized aluminum body 6. Compatible with round and aero seatposts 7. Intelligent memory circuit remembers the last used brightness level and mode when turned on again TECH SPECIFICATIONS LED: 3*red LEDs Battery: 1600mAh/3.7V rechargeable Li-ion battery Dimensions (light unit): 41mm (L)*33mm (W)*62mm (H) Weight (light unit): 77g Design and specifications are subject to change without notice.