Specifications: Maximum voltage: 5V Heating film:19.6 x 6cm/7.72 x 2.36inch Wire: 1.5m/59.06inch Heating temperature: 35-50 degrees How 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. 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 air or placed on the table to test the temperature, a little bit of heat will be dissipated Application Range: 1. Customers who use it in their clothes, let them put them 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 middle of the heating pad, then the pet will not radiate heat when lying on it, and the temperature will rise. 3. For solid products, wrap the heating pad on the product first, and then wrap a layer of foam paper or thermal insulation cotton on the outside to prevent heat dissipation. Package Included: 1 pair x USB Heating Pad Note: 1. Only in the insulated environment such as sewing between clothes or a quilt, it can be heated to about 35 to 50 degrees, and the heating time will be 20 to 40 minutes. 2. If the USB output interface used by the customer does not reach 2A, the switch cannot be opened. 3. If the customer uses the power bank or power adapter, the switch can be turned on, but it will automatically turn off after about 10 minutes, because the power bank or power adapter used by the customer does not reach the output power on the product label. It is recommended He can use another power supply device.