1.Set inside the vest and the cloth
2.keep body warm
3.Long last heating time
4.Flexible and washable
Li-on battery power supply:7.4V 4400mAh
Temperature range:40-50 degree C
Heating element size:12.5*20.6cm (3pcs in one set)
Working time:4-5 hours
Tiny heated moulds with flexible and washable,character make no difference with any other elegant clthings.
Efficient heated design make quickly warm up even in the extremly cold winter,low,mid or high temperature can be chose when using,buttom design.
It can work in -30 degree C.Battery can be used more than 650 times.recharging time about 4 hours.