Quick release handlebar mount (fits 22-35mm)
Quick release helmet mount
Low battery indicator
Rechargeable lithium ion battery
Recharge time: 4 hrs
Charging & fully charged indicator
Automatic turn on or off indicator (when plug in or pull out the DC & USB cable)
Taillight function with ON / OFF button
USB power output function
Smart charging - with fully charged indicator and automatic fully charged cut-off system