Bike Rear Light Sensors the same coating that prevents

the same coating that prevents the accumulation of bacteria in our tanks

Adjustable Double Chest Strap: Offers a range of adjustments for a custom fit and increased stability

rechargeable lithium battery provides up to 21 days of battery life in smartwatch mode with an additional 3 days when solar charging4

No seams which may leak air

convenient illumination

Bike Rear Light Sensors the same coating that preventsAluminum alloy shell, anti falling, wear resistant and stronger Braking sensor, 5 seconds highlight to warn the rear vehicle Daily waterproof, worry free riding Built in 350mAh polymer lithium battery, USB fast charging Manual mode and automatic mode