EKS-37B - 10inch Electric Aluminum Scooter Top Speed: 40 km/h (adjust) Tire : 10inch solid tire /rear tire(motor) Max Load:  150 kg Motor Power: 500W+500W Brushless motor(dual motor) Battery: 48V 13Ah Chinese lithium battery (624W) Brake System: Rear wheel disc brake Milage: 20~25km(depends on rider's weight, road conditions etc.)