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Package Included:
2200mah*2：
1 Pair Heating Socks 
2* Lithium Battery(2200mAh) 
2 in 1 USB Cable
2*4000mah：
1 Pair Heating Socks
2* Lithium Battery（4000mAh）
2 in 1 USB Cable For 3A battery：
2* Battery BOX（ not included Battery ）
1 Pair Heating Socks
Sock+2*Battery Box+USB Cable：
2* Battery BOX（ not included Battery ）
1 Pair Heating Socks
1*USB Cable
Description:
Upgrade Classic Electric Heated Socks
Feature：
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.
Upgrade Battery 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 battery pocket is safe and easy to carry.
Kit Including: One set has a pair of electric hot socks, two 3.7V 2200MAH / 4000MAH lithium batteries and USB Cable . The battery needs about 3 hours to fill and can sustainable heat for 3-7 hours.
Rechargeable Heating Socks: Rechargeable lithium battery 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
With the change of temperature, the indoor use time will be longer, please allow the time error, the experimental environment is different
4000MAH
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 
With the change of temperature, the indoor use time will be longer, please allow the time error, the experimental environment is different
Battery size: diameter is about 1.8CM/0.71in; height is about 6.5CM/2.56in
Charging time: The battery takes about 3-6 hours to fill
Specifications:
Color：Black&Gray/ Gray&Black /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 lithium battery（chosen）/ 3.7V 4000MAH lithium battery(chosen)/For 3A battery（not provided for）
2200mAh Direction for use:
1. Instructions for use:
1. Wear socks,open the package,take out the socks,and wear the socks on your feet(note the front and back of the socks,Don't wear the socks reverse).It is recommended that the battery pocket be placed on the outer tip of the foot.
2. Connect the battery power and remove the link wire inside the socks to insert the battery hole.
3. Turn on power,press and hold the battery switch button for 2 seconds to turn it on,and the battery indicator three bars represent the three gear positions(all bright is the highest level).
4. Adjust the temperature,when the battery indicator light is two squares(this is the mid-range),then press the switch key,the battery indicator lights up one space(this time is low)According to toot temperature,adjust the temperature of the socks.
2. Washing instructions:
1. Be sure to remove the battery before washing,and insert the battery cable into the battery pocket(note that the battery can not be washed)
2. The water temperature should not exceed 50degrees,only hand wash,can not be washed with a washing machine.
3. Dry.Can not be dehydrated with a washing machine,can not be dried by a dryer or dried at a high temperature,do not use an iron.
3.Battery maintenance:
1.The battery should not be close to the source of supp;y or close to high temperature objects.It should not be soaked,not dropped,and should not be disassembled.
2.The battery does not need to be fully charged for along time. It is recommended to charge the battery every 60 days.
3.The battery should be stored in a dry and cool place.