2021 zima latest! The strongest winter electric socks on the market! Increase the battery capacity of one leg to 4000 mAh Continuous fever can last up to 10 hours Super elastic, thick and warm, skin-friendly and soft Use innovative spiral heating, heating wire built into the sock layer, so you can warm the soles of the ankle/soles/foot surfaces [Freely control the temperature] Electric socks can be heated up to 40 -65 , your feet are no longer cold in winter. Heated socks have three degrees of heating: high, medium and low, which you can freely adjust to your needs. [Full heating] Heating cables are arranged on the soles and instep of heated socks. The resulting heat can warm your feet. The heating cables on the soles of the feet are arranged in a U-shaped shape, making heating even and pleasant. [High capacity battery] The battery capacity of heated USB socks is 4000 mAh, and the heating time can be up to 11 hours. The battery is rechargeable and the charging time is about. 6 hours each. [Soft and breathable] The fabric consists of Modal Fiber and Cashmere, absorbs sweat and keeps your feet healthy. The warm men's socks are fluffy, keeping your feet warm and comfortable. [Free size and fashion] Unisex warm socks with medium size. One size fits a size 36-44 EU! Long, cotton socks in tubes can cover the calf, wide, warm and stylish! [The need to keep warm in winter] Ideal for hunting, skiing, fishing, hiking, walking dogs, snowboarding, motorcycle, horseback riding and sporting events. Heated sock batteries are a good choice for cold winter; It really makes a great gift for family friends for New Year or Christmas. Heated socks can be washed by hand or in the washing machine We recommend hand washing first, which can extend the life of heated socks ; Before putting them in the washing machine, heated socks are better washed in a laundry bag. Avoid ripping off the sock wire when the washing machine is moving. Use three layers of fabric, three levels of temperature control! High temperature transmission: can be used for 4,5-5,5 hours to fully charge, temperature 60-65 degrees Medium temperature transmission: can be used for 6-7,5 hours to fully charge, temperature 45-59 degrees Low temperature transmission: can be used for 9-10 hours to fully charge, temperature 39-44 degrees With a large battery capacity of 4000mAh, these socks can provide all-day warmth, making them ideal for hunting, skiing, fishing, hiking, dog walks, motorcycles, outdoor sports, etc., not to mention. An essential artifact for heating the feet of the elderly throughout the winter! Four simple steps to complete socks: Wear socks Connect the battery Adjust to a comfortable temperature Store the battery in a small pocket (only 80g) Easy to wash by hand or machine (remember to remove the battery), it is recommended to purchase more than 2 pairs for easy replacement! This is a wonderful, warming gift for family or friends in winter! Product parameter Surface Material: Cashmere Inner Material: Modal Fiber Battery capacity: 4000 mAh x 2(The designated battery capacity is 4500 mAh, the actual battery capacity is about 4000 mAh) Charging Voltage: 5 V Operating Current: 800 mAh-1100 mAh Output voltage: 3,7 V Battery Size: 15,8 x 44 x 78,5mm, 0,08kg Charging time: about 4,5-5 hours after full charge Size: sock length 33 cm, sole length 21 cm, sole width 9 cm; Packaging Specifications: 20 x 10 x 7.2 cm Weight: gross weight 463g