SPECIFICATIONS:
Name: Light helmet, Cycling Helmet, Bike Helmet, Bicycle helmet
Power: USB charging
Feature: Ultralight, Integrally-molded, Insect net helmet
Function: Waterproof, Shockproof, Safety
Battery:2000 Milliampere
Size: 57 - 62 cm
Time:
Mighty can last up to 4 hours
Low can last up to 9 hours
Flash can last up to 24 hours
Only side & rear warning light can last up to 1 month
TIPS: Cover USB in the rain