About Product:Net/gross weight: 55/60 kg\nAssembly size: 1250 * 550 * 1216 mm brand: army\nPacking size: inner box: 1100 * 250 * 870 mm, outside the box: 1115 * 265 * 900 mm\nThe flywheel: 22 kg (solid cast iron flywheel)\nBraking system: emergency cowhide fast braking speed resistance regulation (us patent)\nThe transmission system: two-way transmission belt\nThe pedals: aluminum alloy with bearing M18 screw forces the JD - 304 - v\nElectronic watch: TE - 2300 electronic watch (Taiwan), heart rate, built-in motor show intelligent bluetooth, bring their own mobile phones