Specification:Descriptions: This USB heater pad can be washed, bent, rubbed, folded to use. Mainly used for neck, lumbar, back, abdomen, waist heating, cushion, pet bed heating, etc. Small size, light and easy to carry.Features:Can be washed, bent, rubbed, stitched on clothes. Can be used for neck, back, abdomen, lumbar heating. Silicone switch, waterproof, can be fixed around the sewing. Third gear thermostat, the temperature can be to choose. Press and hold for 5 seconds to turn on the switch. Small size, light and easy to carry.Specifications: Material: Carbon fiberRoom temperature : 6 (Ω)Thickness: 1 (mm)The main purpose: Cushion clothing fever tabletsScope of application: 35-50 degreesSize: 23.3 x 29cm/ 9.17 x 11.4inchLine length: 1.5 meters/59.06inchSwitch: Silicone third gear thermostatColor:BlackHow To Use:1: Find a piece of quilted jacket, bath towel, etc., and put the heating pad in (fold it in half or flat, if you want to test the temperature, you can put the temperature probe on the heating pad).2: The heater is connected to the 5V2A USB output interface (if it is a switch model, please turn on the switch).3: The temperature in the padded jacket will continue to rise as the heating time increases, and the expected temperature will generally be reached in about 10 minutes.Attention: If it is exposed in the or placed on the table to test the temperature, a little bit of heat will be dissipated.4. How to open the switch model: Turn on the power, press and hold for 5 seconds, the red indicator light is always on, which means the heating is already heating. If you want to adjust the gear, just press it once, and the temperature of the switch light is different. Three gears of temperature: red high temperature / white medium temperature / blue low temperatureApplication Range:1. Customers who use it