1. rated voltage: 3.6V
2. Comes with battery compartment,ordinary or rechargeable batteries can be used.
1. Foot is the second heart of a human body. One body can be kept warm by keeping heating his feet. Heating shoes prevents frostbite of the feet, activates blood flow, eliminates tiredness, etc.
2. Use high technological bio-thermal fiber as a heat source.
3. Possess far infrared physical therapy (radiating 5-12um light wave on conducting electricity)
4. Heating part has even temperature with surface temperature between 35℃ and 45℃.