Battery Voltage:2*3. 7V 2200mAh Li- ion Battery.
Heating Time: 4- 8 hours ( depending on the outside environment).
Heating Temperature: 45- 55 Celsius Degree.
Heating Area: Front instep.
Suitable Occasions: Rechargeable heating socks are suitable for cold weather projects or winter outdoor sports, winter skiing, camping, riding, motorcycles.