Product name:red light therapy belt Material:Neoprene Function:therapy, Slimming/pain relief Light color:red Wavelength:660/850nm size:126*18cm Light source power: 20 (W) Voltage: 12 (V) Single package size: 30X20X8 cm Single gross weight:1.20 kg Weight loss and Pain Relief:Affordable red infrared light therapy device can effectively relieve pain without causing harmful side effects. Relieve Joint and Muscle Pain:Red light therapy device is suitable for back, neck, shoulders, arms, knees, hands,feet. At the same time, it can also help for muscle fatigue and soreness. Technology:Near-Infrared Technology can be used effectively. The thermal energy of near-infrared rays reaches the muscle layer without dispersion and is known for its penetration 12 times deeper than far-infrared rays.It can help to relieve inflammation and pain. Especially, LED belt compact, the size is small, has strong power with dual-LED chips. LED belt has portable and wearable at the same time. You can enjoy it anytime, anywhere by connecting to a power bank or charging terminal.