Welcome to Lucktop,We sincerely wish you a happy shopping. ❀Feature: ❀【High Quality Warm Socks】 Heating socks powered by Battery sources. will enable you to stay out for longer and in comfort on those cold weather ❀【The battery box is very safe】The battery box is specially designed for the circuit board ❀【Soft Breathable Insulated Material】This Heated Socks Made from high-quality cotton fiber, function of absorbent, breathable, quick-drying and elasticity. soft Padded reinforced heel & toe.Prevent your feet from getting cold. ❀【Make You Warm on Winter】This heated socks upgraded to use fiber heating elements Which can be stimulate your blood circulation.Ideal for people with long cold feet and stiff joints.Give you a warm winter. ❀【Ideal Gift In Winter】Heated Socks suitable for all kinds of outdoor activities in winter, such as fishing, camping, snowboarding, hunting, hiking, outdoor work, etc.Perfect warm gift for your parents and friends, have a warm winter together. ❀No problem for heating at minus 40 degrees, heating at a constant temperature of 50 degrees, keep warm but not hot feet! ❀It can be equipped with lithium batteries or 1.5v dry batteries, dual-use models ❀Specification: ❀Battery life: 9hours ❀Battery capacity: 2200MAH ❀Input voltage: 5V/1.0A ❀Output voltage: 3.7V/2.0A ❀material:Cotton+ABS ❀Size:Sock length :20x23x9 cm/7.87x9.05x3.54 inch ❀Package Contents: ❀1 pair of socks ❀1xBattery box (without batteries)