Features: 1. This product penetrates through the gentle heat of moxibustion fire and conducts through the meridians, so as to achieve the effect of hot compress. 2. Made of carbon fiber, it has the characteristics of corrosion resistance, high temperature resistance, good insulation and friction resistance. 3. One-key control, considerate sailing, set the temperature and protect the river; according to the ambient temperature, it will rise to the set temperature in 30S (the bottom gear is about 45 degrees, the middle gear is 52 degrees, and the high gear is 60 degrees). 4. Using USB power supply, strong energy saving, easy to use, and at the same time for (5V 2A) voltage output, far below the human body safety voltage of 36V. 5.USB interface: USB cable is easy to use, mobile power supply, charging plug, laptop, car charger can be charged. Specification:Item Type: Heated Elbow BraceColor: BlackSize: Approx. 21 x 38cm/8.27 x 14.96inchUSB Length: Approx. 1.2m/3.94in Package List1 x Heated Elbow Brace1 x Manual1 x Data Cable Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.??Protect the Elbow??:The heated arm sleeve can penetrate through the gentle heat of moxibustion fire and conducts through the meridians, so as to achieve the effect of hot compress. It accelerates recovery from elbow arthritis and tendonitis, and reduces ulnar nerve compression and arm fatigue. ??Comfortable Size??: The elbow warmer is made of carbon fiber material, which is very soft and comfortable for both work and rest. It has the characteristics of corrosion resistance, high temperature resistance, good insulation and friction resistance. The heating pad for elbow also has a better insulation effect to avoid rapid heat loss. One size fits most people. ??Elbow Pain Relief??: Our heated elbow brace provides ultra-comfortable heat therapy for your elbow, improves blood circulation and effectively relieves elbow pain, helping to reduce swelling, inflammation and pain caused by arthritis, golfer's elbow, tennis elbow, epicondylitis, tendonitis, bursitis, injuries and more. ??USB Rechargeable??: Using USB power supply, strong energy saving, easy to use, and at the same time for (5V 2A) voltage output, far below the human body safety voltage of 36V. USB cable is easy to use, mobile power supply, charging plug, laptop, car charger can be charged. ??Adjustable Temperature??: One-key control, considerate sailing, set the temperature and protect the river. According to the ambient temperature, the elbow heating pad will rise to the set temperature in 30S (the bottom gear is about 45 degrees, the middle gear is 52 degrees, and the high gear is 60 degrees). Health & Household/Health Care/First Aid/Hot Cold Therapies/Heating Pads.