USB heater Electric heating pad Pad heater Thermal Clothes Heated Outdoor Mobile Feature WATERPROOF: Silicone switch, waterproof, can be fixed around the sewing. It is easy to clean and can be washed with water. INSTRUCTION: Press and hold for 5 seconds to turn on the switch. Third gear thermostat, the temperature can be free to choose. Working Condition: Heating power: The applicable voltage of this product is only 5V, and it has a USB interface. 1A or 2A for choose. Heating time: It may take 30 or 40 minutes to heat up. Heating environment: If the heating plate is wrapped in clothes, bedspreads or pillows, the temperature can reach 40 to 45 C after 20 minutes. If no packages are directly exposed to the air, the temperature may be only 35 after 30 or 40 minutes (from room temperature> 10). LONG EXTENSION USB: Comes with a 1.5 meter extension USB cable so you will not worry about cable length WIDE APPLICATION: Widely used for warming shoulder, neck, waist, back, abdomen and cushion or pet bed. WATERPROOF: Silicone switch, waterproof, can be fixed around the sewing. It is easy to clean and can be washed with water Surface temperature is about 30~60 Washable, with timer. Detail Thickness: 0.5-2 mm Size: about 10 cm 30 cm Package content 1 SET Heating Pad