Far-infrared heating and vibrating hot compress massage can deliver warmth to the waist and abdomen to relieve body pain. The wormwood bag can be put into the belt for heating. Smokeless and fireless moxibustion, safe to use. Inner bag design - Mesh breathable material, so that the wormwood bag can penetrate into the body better. 3. Temperature adjustment, the red light is 70, the blue light is 63, and the green light is 56. One switch is used to control the heating of the front abdomen, and the other is used to control the heating of the back waist, and it is also possible to turn on 2 switches at the same time to control the heat of the front and back. Short press once, the red light continues to vibrate and massage; press again, blue light interval vibration massage; press again, green light long interval vibration massage. It can be used in the office, at home, during exercise, while resting. specification: Condition: 100% brand new Item Type: Heated Belt Material: diving fabric Colour: Black Heating temperature: 56-70 Input/Output: 5V/2.1A Available Sizes: S, L, XXL Dimensions Length (cm/inch) Width (cm/inch) Suitable waist seconds 95/37.4 22/8.7 22.3-31.5 L 110/43.3 22/8.7 32.8-40.7 XXL 125/49.2 22/8.7 42-48.6 Weight: about 460-490g Package list: 1 x Heated Belt 1 x USB data cable