Features: Thickness: 0.5-2 (mm) Temperature: 35-50 ℃ Switch data line length 120cm Product heating surface size:35x10.5CM Precautions for using electric heating cloth: 1. if you have diabetes, heart disease, heart bypass, cardio cerebral vascular disease and other heart and vascular patients, please consult the relevant person and purchase it. 2. It is not recommended for pregnant women and children under the age of 10. 3. It is not recommended for those with skin injury healing and bleeding tendency. 4. It is not recommended for patients with skin perception disorder or abnormal skin. 5. It is not recommended for those who are sleeping, unconscious and incapacitated. Description of third gear switch: -After the first power on, press start to output 100% voltage at high temperature (automatically to the intermediate temperature after 5 minutes), then output 85% voltage according to the second temperature and 70% voltage at low temperature for three times. Closed four times. -In the power on state, press and hold for 3 seconds for the first time to enter the 30 minute timer, and the current temperature indicator flashes. The color of the items shown in the photos may show some slight differences on the computer monitor because the monitor itself is not calibrated. Products include: 1 electric heating pad + 1 switch data cable 1 x USB charging cable 1 x User Manual (English)