jxhracing GH001 Heated Warm Gloves-Large Using the newest composition metal cellosilk which is water-proof and folding resistant capability. Safe and reliable: be equipped with power supply adapter and 3.7/7.4V polymer batteries. The temperature can reach 45~60 degrees, and power is 3.7~3.8V. One time charge can support 3~4 hours continuous use, providing exceptional warm to you in cold winter. Unique design of concealed battery.