Motor: 24V50W Battery:25.2V2Ah Lithium-ion battery Max Speed: 9.7km/h Product sizes: 90.2 x 59.8 x 55.9 cm Built-in safety mechanism:Automatic slow-start Max weight:30kg Front wheel size:16” x 3.8” Rear wheel: 8.15” x 4.84” Wheel material :Plastic Total number of wheels:1 front + 2 rear Brake type: Automatic (electro-mechanical) Max charger: 29.4V 0.5A Carton size: 61.5x37.5x43.5 cm