Two Versions: There is an on/off version and a three-speed temperature control version. The on/off version does not need to adjust the temperature, and it heats up when the switch is pressed. The three-speed thermostat version can be set to high temperature, low temperature, and medium temperature according to your needs. Three-dimensional Cutting Ergonomics: Three-dimensional cutting, long-lasting warmth, soft and comfortable. Sensitive Touch Screen Design: The sensitive touch screen designs allow you to easily swipe on your phone or tablet without taking off your gloves. Inner Design: The inside of the Cambbiy is filled with coral fleece, and the circulating heat preservation and heating keep warm. The heating is continuous and the heat is higher than other gloves. Carbon Fiber Heating Wire: Uses carbon fiber heating wire, long service life and high heat energy conversion efficiency. (Note: The correct way to use this product is: use a 5V 2A mobile power supply or any other power supply product that can match a USB plug. The reason is that this product cannot have a built-in battery, so it cannot store electricity. Secondly, this product is a USB plug. The switch is on the USB cable.) Specifications: Name: USB Rechargeable Heated Gloves. Size: Glove length: about 27 cm/10.63 inches. Finger length: about 10 cm/3.94 inches. Palm: about 12 cm/4.72 inches. This product needs a 5V 2A mobile power supply to generate heat (this product does not include a mobile power supply) Packing list: 1*Pair of Gloves, 1*USB cable.