Description: - Upgrade Quality: This heating stocking is made of 85% cotton 8% spandex and 7% polyester it becomes more absorbent breathable quick-drying and elastic. - Upgrade Process:On the basis of last year our upgraded model uses fishing line to sew the heating sheet. After long-term use and multiple washings the internal structure remains intact. - UpgradeBattery Capacity:This year we have provided two capacity batteries for choice helping our customers to get enough protection for longer outdoor activities. - Heating Piece: The heating piece is inside the sock. Specially designed power pocket is safe and easy to carry. - Kit Including: One set has a pair of electric hot socks two 3.7V 2200MAH / 2600MAH power and USB Cable . The power needs about 3 hours to fill and can sustainable heat for 3-7 hours. - Rechargeable Heating Socks: Rechargeablepower heating socks for cold weather projects or winter outdoor sports winter ski hunting camping cycling and motorcycles to keep warm. - Suitable Occasions: Focusing on the toes to prevent the feet from getting cold which can promote blood circulation. Apply to arthritic feet and long-term cold feet and stiff joints giving you a warm winter. Button functions: Three-speed thermostat Automatic Level Adjustment(preheating function) 1. After the thermostat is connected to the power supply (battery) the one two and three lights flash once. Long press the button for 2 seconds to start and enter the preheat mode the LED shows one with breath flash. High output with output power of 100% heating automatically changes to mid-level after 5 minutes. 2. Mid-level LED light displays two output power is 70%. 3. Low-level LED light displays three output power is 40%. 4. Click to switch level button with three levels cycle long press 2 seconds to shut down. Heating time: 2200MAH High-level One light heating around 3 hours Mid-level Two light heating for about 4.5 hours Low-level Three light heating for about 7 hours 2600MAH High-level One light heating around 4 hours Mid-level Two light heating for about 6 hours Low-level Three light heating for about 8 hours Battery size: diameter is about 1.8CM/0.71in; height is about 6.5CM/2.56in Charging time: The power takes about 4-6 hours to fill Specifications:ColorBlack&Gray/ Gray&Black Heating part: Heat on the sole of the feet Size: Free size (socks are elastic can stretch) Weight: about 350g Battery: 3.7V 2200MAH power chosen/ 3.7V 2600MAH power (chosen)Package Included:2* Heating Socks 2* Power (2200MAH/2600MAH FOR CHOSEN) 1* USB Cable Origin:Mainland China Hose Height:Knee-High Gender:MEN Finger-separated:No Sport Type:Camping & Hiking Heating part:Heat on the sole of the feet Size:Free size Dropshipping/Wholesale:support Color:as shown