Safe and easy to use, heating pad can be sew on any fabric or seat cover Usb heating pad is widely used for warming shoulder, neck, waist, back back, abdomen and cushion or pet bed Convenient to power, just connect to USB port of computer, power bank or adapter Mains 5V, 1A or 2A Note: If this heating pad is used in clothes, quilt or pillow, the temperature may be 40~45 after 20 minutes. If there is no cover, the temperature might be only 35 after 30 or 40 minutes (from room temperature > 10 )
