Low-noise DC motor Input voltage: 220V¡À10%(50 ¡« 60Hz) Max. Power: 2.5HP Speed scope: 0.5-12km/h Incline scope: 0-6.5(ZM-833AS) With speed direct key to select: 10 (ZM-833A)/5 (ZM-833AS) With incline direct key to select: 5(ZM-833AS) Preset speed programs, 12 levels each: 5 Preset incline programs, 12 levels each: 5 (ZM-833AS) With speed adjusting button & hand heart rate monitor on handrails With manual incline (ZM-833AS) With hydraulic soft folding system With high strength, high density, high elastic anti-friction running board With silicon suspension and rubber damper double absorber system With over-current £¦ short circuit protection Built-in U disk, SD card broadcast system £¦ Support MPEG1/2, MP3, WMA format With muti-audio source switch system high-fidelity sound box With massage, waist-twisting, sit up, dumbbell functions Max. user weight: 130KG Running belt size (mm): 2740¡Á415 Running area (mm): 1200¡Á405. Packing size(mm): 1840¡Á780¡Á390 Occupancy area (mm): 2000¡Á830¡Á1400 N.W./G.W.£¨kg£©: 80/92(ZM-833A)82/94(ZM-833AS).