TANGKULA Ultrathin Mini Crazy Fit Vibration Platform Massage Machine Fitness Gym Material: ABS(enclosure) + Rubber & Plastic(Stepper) + Steel Frame(body inside) Rated Voltage: 90-110V AC Rated Power: 200W Rated Frequency: 60Hz Speed Range in manual-mode: 1-60(useful in manual-mode, not useful in auto-mode)