Heated Socks for Men Women 7.4V 3000mAh Battery Rechargeable Washable APP Remote Control Electric Heating Socks for Outdoor Riding Camping Hiking Motorcycle Skiing Warm Winter Socks. Upgraded Heating Elements】: The design of the heating sheet makes your socks heat up evenly and is not easy to burn your feet. Using our heated socks effectively helps you improve blood circulation and reduce the coldness of your feet. Let you say goodbye to the troubles of frostbite and Raynaud's syndrome 【APP Control】: Our customized APP does not need to register, but it does not need network. Through the sliders and buttons on APP, you can set heating temperature (86℉-158℉) and timing. You can also press the power button on battery pocket to adjust the temperature level of socks 【Long-lasting 7.4V Battery】: Compared with traditional 5V(Actual 3.7V) batteries, our battery has higher energy (7.4V*2600mAh=19.24Wh), faster heating and better performance at low temperatures. Up to 10 hours of use.