Specifications: Frame Material: High carbon steel Maximum Load: 150kg Suitable Height: 160-190cm Net Weight: 38.5kg Dimensions: 145*118*72cm Saddle Height: 75cm Tires: 16×4 inch pneumatic tires Battery: 48V 15AH Motor: 500W (peak 1500W) Suspension: Front and rear suspension Brakes: Front and rear mechanical disc brakes Speed: 5 leves Sensor: Speed sensor Warranty: 6-12 months Installation video---https://youtu.be/CBeD2U56vwY.