Tips: Cover USB in the rain
Buy 1 item get 1 free gift (Sport Wristband)
Brand: ROCKBROS
Name: Light helmet, Cycling Helmet, Bike Helmet, Bicycle helmet
Power: USB charging
Feature:Ultralight, Intergrally-molded, Insect net helmet
Function:Waterproof, Shockproof, Safety
Battery:2000 Milliampere
Time:
Mighty about 4 hours
Low about 9 hours
Flash about 24 hours
Only side & rear warning light about 1 month
