Wheel balancer 1) automatic start / stop 2) automatic distance and wheel diameter measuring 3) self diagnosis 4) self calibration 5) changeable between gram and ounce 6) changeable between millimeter and inch 7) protection cover 8) 4alu functions for light alloy wheels 9) color video display 10) cycle time: 8 seconds 11) maximum wheel weight: 70kg 12) maximum power absorption: 180 - 370w 13) standard power supply: 110v / 60hz, 220v / 50hz / 1hp, 380v / 50hz / 3hp 14) balancing speed: f_200rpm 15) balancing precision: f+1g 16) rim diameter: 10 - 24" 17) rim width: 1.5 - 20" 18) n.W. With cover: 140kg 19) noise: