One Pair of Winter Heated Socks 4400mAh Battery Thermal socks Men's Women's Heating Foot Warmer Electric Socks Warm Socks Cycling Ski

Specification: Use life: 9 hours Battery capacity: 2200MAH Input voltage: 5V/1.0A Output voltage: 3.7V/2.0A Low-end: 40 degrees Mid-end: 45 degrees High-end: 50 degrees Material: Cotton+ABS Controllable temperature: 40-50 degrees Celsius Dimensions: Sock Length: 20x23x9 cm / 7.87x9.05x3