Using 4 high-efficiency red LEDs and an 800mAh high-capacity Li-ion battery, TR100 is a powerful rear light with max 100 LED lumens for daytime riding and max 26 hours of runtime on low mode. The light is easy to use with a USB C charging port and also usable on rainy days with IPX6 water-resistance design.

• Eye-catching flashing with max 100 LED lumens, providing great visibility for daytime riding
• Stylish lens with special optical design, providing clear rear and side visibility
• Auto power save and indicator for low battery
• USB-C charging port for convenient use
• Compatible with round and aero seatposts
• Intelligent memory circuit remembers the last used brightness level and mode when turned on again

LED: 4* high-efficiency red LEDs
Battery: 800mAh/3.7V rechargeable Li-ion battery
Dimensions (light unit): 38mm (L)*25mm (W)*57mm (H)
Weight (light unit): 50g
Mount size: compatible with φ 24-36mm seatpost