CE900 Elliptical Generator drive system requires no external power source 30 lb flywheel with 12:1 pedal to flywheel ratio 2-degree pedal inversion ensures comfort Dual rail track system and smooth 21” stride Industrial-grade 72mm roller bearings for added reliability Experience the ultimate in convenience and comfort with the CE900 Elliptical. Its innovative Generator drive system eliminates the need for an external power source, while the 30 lb flywheel and 12:1 pedal to flywheel ratio provide a smooth and efficient workout. With a 2-degree pedal inversion and a dual rail track system, this elliptical guarantees a comfortable experience every time. Plus, the industrial-grade 72mm roller bearings ensure reliable performance to keep you going strong.