Long Heating Time: Rechargeable heated socks are equipped with 2pcs 2200mAh Large Capacity Battery, providing you with up to 10 hours enduring warmth. Multiple Heating Methods: The heated socks are designed with 3 heat settings, including high heat(155-160¨H, 6 hours), medium heat(140-150¨H, 8 hours), and low heat(115-120¨H, 10 hours) make these electric heated socks ideal for Hunting, Fishing, Camping, Hiking, and working outside.