Heating Waist Belt Wrap, Compression Lower Back Heat Pad Pain Relief Feature Far infrared heating, using graphene heating sheet, heating faster and safer. The back is removable and washable Built-in high-capacity lithium battery power 2000mah, USB rechargeable, easy to use Ergonomic design, can be according to comfort With vibration massage function, one-key start, three- temperature adjustment and constant temperature heating Description Material: ABS plastic + flannel Color: white, Size: 18x8.5x1.2cm Weight: 73g Input power: 5W Controller: 3 gears Heating temperature: 40C- 55 C-65C Battery: 2000mah Voltage: 5V Charging time: about 3-4 hours Use time: about 2 hours Control line length: 83cm Compression Waist Heating Pad Support for Lower Back Pain Abdomen Menstrual Cramps Lumbar pain Stomach pain Muscle fatigue Stiffness or cramping Package Included 1 x heated waist wrap 1 x USB Cable