Two versions: There is an on-off version and a three-speed temperature regulating version. The on-off version does not need to adjust the temperature, and it will heat 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 Designs: The sensitive touch screen designs can make it easy to slide on the phone or tablet without removing the gloves. Internal Design: The inside is filled with coral fleece, and the circulatory heat preservation and heating keep warm. The heating is continuous, and the heat is higher than other gloves. Carbon Fiber Heating Wire: Using 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 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 Charging Heating 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 Product fabric: high-quality buckskin Product inside: coral fleece 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 Notes: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.