Feature: 1. Applicable Scope: This electric heating pad can be used to warm shoulders, neck, waist, back and abdomen, also can heat cushion or pet bed, need input DC 5V to heat. 2. Adjustable Temperature: The USB heating pad supports 3 levels temperature adjustment, the temperature range is 30‑50℃, and the switch light changes with the temperature level. 3. Excellent Materials: The heating pad is made of carbon fiber and non woven fabric, which is waterproof and resistant to bending, can also be wiped directly with damp cloth. 4. Efficient Heating: The internal temperature of the heating sheet will continue to increase with the heating time, usually reaching the expected temperature in about 10 minutes. 5. For Household Use: This electric heating pad is perfect for home use, easy to maintain, with stable performance, fast heating and maintain high temperature to help relieve body pain. Specification: Item Type: Electric Heating Sheet Material: Carbon Fiber, Non Woven Fabric Supply Voltage: DC 5V Product Size: Approx. 2Pcs: Size: 10 x 18mm / 0.4 x 0.7in (without wire), 1Pc: Size: 20 x 20mm / 0.8 x 0.8in (without wire) Temperature: High temperature 45-50℃, medium temperature 35-40℃, low temperature 30-35℃ (3 levels adjustable) Switch Light: High temperature red light, medium temperature white light, low temperature blue light. Package List: 1 x Electric Heating Sheet Note: There is a slight error in size.