perfectly working ..very useful.. rarely used ..

Moist heat option: gives intense, moist heat therapy which provides relief from pain associated with arthritis, muscle spasm and inflammation caused by strain and tension
Safe and effective: electric gel heating pad belt is intended for use on the back, shoulder, wrist, stomach, knee, neck or foot
Fast-heating: heats in seconds to provide fast pain relief to aching muscles
Features: an easy-to-use digital hand control that allows you to program and monitor the temperature and treatment time