Features: Features a 500W powerful motor, boasting top speed of 15.5 MPH. Built in 36V / 12.5AH lithium battery with a travel range from 31.1 miles(pure power mode) to 62.1 miles (pedal assistant). Equipped with front and rear double disc brake, providing powerful, progressive braking in any conditions. 3 work modes: pure electric mode, electric power+pedal mode, manpower mode. 7-Speed gears help you conquer a variety of terrain. Multi-layer thick rubber tire, anti-skid and explosion proof. IPX5 waterproof protects your cycling on rainy days. Multiple shock absorption system makes a soft reaction on bumpy roads. Charging your smartphone at any time with the USB charger. Aluminum alloy frame strong enough to bear a person up to 264.6 lb. Super bright LED light for safe riding in dark. Nice tool for urban, commuting, short trip, shopping and daily use.