Item Type: Muscle Stimulators Material: PC, Silicone Auto Programs: Scraping, Massage, Acupuncture, Tapping, Combination Power by: AAA battery (not Included) Features: Firms, tones, strengthens and tightens muscles. Electromagnetic pulses help firm and define your core with strengthening muscle contractions. Easy push-button operation with 6 modes. Electrical muscle stimulation (EMS) Technology....