Sunpentown Vibratone Whole Body Vibration Machine AB-759 Features: Increases muscle strength and flexibility Enhances balance, mobility and coordination Increases bone density Strengthens posture Improves blood circulation Increases blood oxygenation Reduces back pain and stiffness Improves skin quality and radiance Enhances metabolism and prevents constipation User friendly control panel 3 Auto programs Up to 20 minutes timer 20 speeds to choose from Pivotal Oscillating Motion Compact design with handle Specifications: RPM (speed 1 / 20): 240 / 480 Frequency (speed 1 / 20): 4.5Hz / 8.42Hz Amplitude: 0-15 mm Recommended maximum weight of user: 265 lbs. Vibrating plate dimension (L x W): 19.29 x 11.81 in. Power Consumption: 200W Power Source: 120V / 60Hz Dimensions: 21.06 x 17.13 x 49.21 in. Weight: 57 lbs.