Tips: Cover USB in the rain

Product Detail:

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: Mightyabout 4 hours
Lowabout 9 hours
Flash about 24 hours
Only side & rear warning light about1month

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ROCKBROS Light Cycling Helmet Bike Ultralight helmet Intergrally-molded Mountain Road Bicycle MTB Helmet Safe Men Women 49-59cm