Choose your power source* for pain relief whenever you need it with the Sunbeam GoHeat USB-Powered Heating Pad. The compact heating pad uses a USB-C connector that is compatible with most power banks, computers, car USB ports, or the included wall adapter, for more flexibility when choosing your power source. Take your pain relief on the go with the GoHeat Power Bank (sold separately.)Enjoy added mobility with the extra-long 58-inch extension cord to move more freely. The 12.5 x 7.5-inch flexible pad neatly rolls to fit into small bags and purses. A 55-inch adjustable strap brings secure, targeted heat therapy to your back, arms, legs, or shoulders, and 3 heat settings offer customized treatment.The Micromink pad and adjustable strap are fully machine washable for easy care—just disconnect from extension cord and power source. Pad must be connected to power source at all times during heat therapy treatment.*For optimal heat performance, use a 2A power source