This is the device that uses electronic muscle stimulation (EMS) to tone and firm your core and back muscles. Employing clinical technology used by physical therapists for rebuilding atrophied and weakened muscles, it delivers a painless electrical pulse to key nerves, causing your abdominal muscles to rhythmically contract and release, boosting their tone. The handheld tethered remote enables you to select from eight different muscle massage modes and a soothing mode for back pain relief. Recommended for 20 minutes a day, five days a week. Results typically seen in 4-8 weeks. Fits waists up to 56" using included belt extender. Charges via USB. Includes three adhesive pads. Not for use by those with a pacemaker. (1 1/4 lbs.)