Askmy E 600 Electric Bicycles Powerful 750 Watt - 1000 Watt Peak Rear Drive Motor, Hydraulic disc brakes, Blinkers, Horn, Turn signals, Head & Tail lights, Color Display 20x4 fat tires, Dual suspension, 30 Amps discharge and 30 Amp controler. Wheel Size20" Voltage 48v,  Power Supply 18 amp lithium battery.