Description: [SAFE 5V USB POWER SUPPLY] : 5V USB powered, low voltage design and safe to use, the USB golve is for desktop computer ,notebooks, 5V=1000 mA Power Bank,5 V=1000 mA Car charger, Just plug the usb heated glove into a 5V USB port and ready to use.If the gloves don't gets warm or just one get warm, please unplug the cable, swapplug it in again.The cords are long enough that you can put the gloves on and then put your coat on so that no one even knows you are connected to wires. [COMFORTABLE TEMPERATURE]:The heating glovess temperature is at about 40-50C, which is the most suitable temperature for our body, you won't feel dry hurted by the overtemperature with ours. With this usb hand warmer gloves, say goodbye to cold winter, even though you need work or study front of the computer. [DOUBLE-SIDED HEATING] : This heating gloves mitten have both side heating pad, it not only can warm your palm, but also can heat your hand back at the same time. , the USB rechargeable gloves warm your palm and hand back simultaneously to drive faster temperature rises, and make hand all around warmed evenly. This heating pad is made from Far infrared carbon fiber, durable and effective Charging Voltage: 5V Heating Temperature: 40(5)C Color: Black,Red Thank you for your understanding, nice day Package Includes: 1 Pair of heating gloves 1 x 1.5M USB Cable