Piano coating
Built-in NiMH rechargeable battery, cab be recharged nore than 500 times
AC 11V-240V Adapter, power & charge at the same time; USB DC 5V available also
Heat conduct quickly
Hand warmer are up to service 4.5~6 hours, charge about 4 hours
Two temperature setting: 39 & 43 degree Celsius
Working time: high temperature 4.5Hrs / low temperature 6Hrs
It is convenient to carry, nice looking and lightly
The size of the products: 84 x 62x 19mm
Product weight: 95g
CE and RoHS compliant
Different color and logo are optional