Descriptions: The USB heating pad can be washed, bent, wiped, folded for use. Mainly used to heat the neck, lumbar, back, abdomen, waist, pillows, bed heating, etc. Small size, light and easy to carry. Characteristics: You can wash, fold, rub, sew on clothes. It can be used to warm the neck, back, abdomen, and lumbar region. Silicone switch, waterproof, can be attached around sewing. Third gear thermostat, temperature can be any. Press and hold for 5 seconds to turn on the switch. Small size, light and easy to carry. Technical data: Material: Carbon Fiber Room temperature resistance: 6 (Ω) Maximum voltage: 5 (V) Thickness: 1 (mm) Main purpose: Fever pills with a pillow Scope of application: 35-50 degrees Size: 23.3 x 29 cm / 9.17 x 11.4 inch Line Length: 1.5 meters / 59.06 inch Switch: 3rd gear silicone thermostat Black colour How to use: 1: Find a piece of quilted jacket, bath towel, etc. and insert the heating pad (fold it in half or flat, if you want to check the temperature, you can put the temperature sensor on the heating pad). 2: The heater is connected to the USB 5V2A output interface (if it is the switch model, please turn on the switch). 3: The temperature of the insulated jacket will continue to rise as the warm-up time increases and the expected temperature will generally be reached in approximately 10 minutes. How to open the square switch model: turn on the power, press and hold for 5 seconds, the red indicator light is always on, which means the heating element is already heating up. If you need to adjust the gear, just press it once and the switch light temperature is different. Three temperature gears: red high temperature / white medium temperature / blue low temperature; Scope of application: 1. Customers who use it in their clothes should put it in their clothes to test the temperature. 2. For pets such as cats and dogs, you can put the temperature probe to test the temperature in the center of the heating pad, then the pet will not emit heat when lying on it and the temperature will increase. 3. For solid products, wrap the heating pad on the product first, then wrap a layer of foam paper or heat-insulating cotton on the outside to prevent heat dissipation. Package includes: 1 x Electric USB Fabric Heater Note: 1. Only in an insulating environment, such as sewing clothes or a pillowcase, will it be heated to 35-50 degrees, heating time in 20-40 minutes. 2. If the USB output interface used by the client does not reach 2A, the switch cannot be opened. 3. If the customer uses a power bank or power supply, the switch can be turned on, but it will turn off automatically after about 10 minutes because the power bank or power supply used by the customer does not reach the output power on the Product label. It is recommended to change to a different power device.