Features: 1. Moxibustion and hot compress: The gentle heat penetration of moxibustion fire is conducted through the channels and collaterals to achieve the effect of hot compress. 2. Carbon fiber has the characteristics of corrosion resistance high temperature resistance good insulation and so on. 3. Three levels of temperature adjustment: One-key control quickly rise to the set temperature according to the ambient temperature within 30S. 4. Safe and low voltage: It adopts mobile USB power supply easy to use and safe to operate. The low voltage of 5V is far below the safety voltage of human body 36V. 5. USB interface: USB cable is easy to use mobile power mobile power mobile phone charging head car charger can all supply power. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: cloth + electronic parts Size: 36*21cm Colour: Black Care position: elbow Gear adjustment: three gears adjustable Heating material: carbon fiber heating sheet Voltage: 5V Temperature control range: 40~60 Power supply mode: USB multi-mode power supply includes: 1 set x Elbow Pad "