External dimensions: 23*14cm 3 preheating modethere are 3 adjustable modes (low/medium/high) for USB gloves, high: about 45; Medium: about 40C; Low: about 37C, can be adjusted to the most comfortable temperature mode according to your calorific needs, the temperature range is comfortable, does not overheat you (the USB glove must be connected to the usb port for heating, the heating will stop after disconnect), please unplug the power supply when staff leave or not in use to avoid prolonged heating resulting in excessive glove temperature causing accident [ 5V heated USB gloves] full finger gloves are powered by USB port and need to be connected to computer, Power Bank, charger or other power sources by USB port (5V input, 2a). The back hand heating pad will heat up quickly indoors or outdoors to keep your hands warm in the cold winter. (do not use high and 5V mobile power supply, power supply adapter, computer usb.usb-c connector above 3.0. When the output voltage exceeds 5v2a, the gloves heating temperature will be too high, which will easily cause burns.) touch screen heating cloth knitted soft cloth, not tight, elastic, comfortable to wear, to ensure your fingers remain flexible during movement. Keeping the fingertips in contact with the top of the glove, special materials on the top of the thumb and index finger allow you to easily use your cell phone, computer, etc. when wearing gloves. Removable Washable Heated GlovesJust remove the heating pad to wash the gloves. Place the heating pad for later use after the gloves are completely dry to prolong the life of the heating pad. When the heating function is not needed, the heating pad can also be removed and used as a normal heated glove. Clothes should be cleaned by removing the piece of heat. The gloves can be cleaned separately. If the piece of heat encounters water, please dry it before use [best gift for winter] essential heat preservation gloves for winter heat preservation, which can be used in the office, family, games, skiing, cycling, hiking, outdoor exploration and other occasions, is the perfect gift for family and friends. We only warm the gloves and do not sell other items in the photo. Due to differences between displays, the images may not reflect the actual color of the item.< /p> Minor dimensional errors are allowed due to manual measurement.