USB Heating Heating Belt Hot Compress Heating Comfortable Heating Pad Feature: According to ergonomic design, beautiful and comfortable. Fast heating device, it only takes three seconds to heat up and increase body temperature. It is suitable for relieving menstrual pain, lower neck and back or abdominal pain Widely Application - The heated belt is made of high-quality soft fabric, which is light and breathable and comfortable and warm when it is close to the skin. The high elastic belt can quickly adjust the waistband, suitable for all waist circumferences WHY IT IS RIGHT FOR YOU - If what you look for is a great gift for mother and girlfriend, this is exactly it Silicone amine PVC heating technology is adopted, and three grades of low (1), medium (2) and high (3) temperatures are set, which can be selected according to their own needs and ambient temperature. It is equipped with 30 minute timed automatic shutdown function. Product size: 160x90x35mm Power supply mode: plug-in model (with usb cable) 5V (DC) 0.8A Input power: 5W Heating temperature: +39C-+50C Ambient temperature under normal working conditions: 5C+40C Relative humidity: 809% Atmospheric pressure: 86kPa-106kPa Storage conditionsAmbient temperature range: -20C~+55 Relative humidity range: 939% Atmospheric pressure range: 50kPa-106kPa Package Contents: 1X Menstrual heating pad Note: Please allow a little error on the size due to manual measurement. The color might exist slightly difference due to different displays.