Item: Smart Helmet
Size:head circumference 57-61cm/22.44-24.02in, head width ≤16.6cm/6.54in
Package size:20X20X15 cm
Unit Weight:2kgs
Material:EPS+PC
Color:black/white
Battery: 3.7V 455mAh Life time in the lighting mode: 26-36 hours Standby time: 180 days Charging time: 3 hours
Electrical parameters: DC5V/1A Light mode: flashing light - tide light - strobe light
Charging mode: USB charging interface
Applicable scene: riding, rock climbing, and other outdoor use