Product parameters:Product material: diving materialBattery Type: Polymer Lithium BatteryDischarge current: 2.1A Charge current: 1ABattery capacity: 5000mAhFeatures:1. Red light heat therapy, hot compress before and after;2. The high elastic elastic band is pressurized to balance the stress on the waist;3. Comes with a large-capacity rechargeable lithium battery.Far Infrared Heating PadFar infrared Heated Waist Belt Back Brace Wrap, has massage and heat treatment effects, which can provide complete pain relief and relaxation for the muscles, relieve stress, help accelerate wound recovery, and have targeted relief of lower back pain.Useful Heat Belt You can use this kind of portable heating waist belt in the waist, shoulder, abdomen, knee, spine and other parts, back massager for men and women,which is very suitable for the waist pain, office workers and long-distance drivers, heated back massager pad can reduce the waist pain, lumbar muscle strain, stiffness and arthritis.Heat Wrap Desing Adjustable waist pad is suitable for waists between 19 inches and 45 inches, Double-layer adjustable straps ensure the best fit for you. Heat belt is durable and will not deform even if folded and stretched multiple times.