Bike Rear Light Sensors Lightweight road bike helmet

Lightweight road bike helmet

No seams which may leak air

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

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

 The flexible frame also fits into the shape of the face while the inner frame provides stability

Bike Rear Light Sensors Lightweight road bike helmetAluminum 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