Heated Socks for Men Women - Electric Heating Socks, Battery Powered Socks Rechargeable for Winter Sports Improved Electric Heated socks in 2020 Let you warm all day! - 19 hours Long Heating Time (Increased by 3 times) - The longest heating time on the market today. Now, with the battery heated socks, get ready for this Winter! Say goodbye to cold feet. Estimated Heating Times: Low-Green: 18-19 hours (104-122℉) Middle-Orange: 11-12 hours (131-140℉) High-Red: 8-9 hours (140-150℉) How to use? 1. Charge the Li-ion Batteries for up to 8 Hours: Connecting the battery with the charger, and the charger was connected into the power supply. The indicator on charger insted of battery turned green means the battery is fully charged. 2. Connect the batteries to the socks 3. Long press the switch ON to start. 4. Press the ON/SETUP/OFF to adjust 3 Levels Temperature. Including: 1 x Pair Heated Socks 2 x 4000mAh Rechargeable Battery 1 x Charge Cables 2 x Battery Protection Cover Notice: (1)Please do fully charged the batteries first. The indicator on charger instead of battery turned green means the battery is fully charged. (2) This kind of battery heated socks can not machine washable. Hand wash only ,please do remember take out the battery before hand wash.