Length, width and height: 4.25-1.55-1.9; 72V4000W AC motor; Speed: about 35; Range: 80-100 km or so; Minimum turning radius ≤5.5 meters; Grade ≥25%; Maximum braking distance ≤5.5 meters; Colloidal maintenance-free dry battery; Rear drive, stepless transmission system; Integral front axle, integrated rear axle; LCD instrument display (including voltage, current, speed, mileage, light and other signals); Steel frame, wear-resistant glass steel body; MP3 player, professional radio speaker, intelligent upgrade version of electronic control, patented technology