20"Aolly folding frame;Aluminum alloy suspension fork;shimano 7-speed;Mechanicaldise brake;CHAOYANG 20“*4.0 Tire;Battly 21700 cell15AH;charge time7-8H;48V500W hub-motor;Mileage≥50km;Max speed≤25km;Speed sensor;LCD display;led light;IP65，L1920*W800*H1200;