Category: Motorized Treadmill Model SF20. Specifications shown on the box: • Device Type: Motorized Treadmill • Model: SF20 • Voltage and Frequency: 220–240 V / 50 Hz • Net Weight (N.W): 18.5 kg (40.8 lbs) • Gross Weight (G.W): 21.3 kg (47 lbs) • Dimensions (MEAS): 118 × 58 × 11.5 cm (46.5 × 22.8 × 4.5 inches) • Quantity: 1 piece (1PCS) The treadmill is new but unused, but there is a problem with the button.