Features: Features a 500W powerful motor with 5 power assist level , boasting top speed of 17.3 MPH. Built in 48V / 10AH large capacity battery offers strong climbing and acceleration capabilities, with a travel range from 17.4 miles(pure power mode) to 24.9 miles (pedal assistant). 3 work modes: pure electric mode, electric power+pedal mode, manpower mode. 7-Speed gears help you conquer a variety of terrain. Front and rear double disc brake, providing powerful, progressive braking in any conditions. Aluminum alloy frame strong enough to bear a person up to 264.6 lb. Shock absorption system makes a soft reaction on bumpy roads. Collapsible for space-saving storage and convenient transport. 300 lumens super bright front light for safe riding in dark. Nice tool for urban, commuting, short trip, shopping and daily use.