describe: Two versions: switch version and three-speed temperature adjustment version. The switch version does not need to adjust the temperature, it will heat up when the switch is pressed. The three-speed constant temperature version can set high, low and medium temperatures according to your needs. Three-dimensional cutting ergonomics: Three-dimensional cutting, long-lasting warmth, softness and comfort. Responsive Touch Screen Design: The responsive touch screen design allows you to easily slide your phone or tablet around without taking off your gloves. INTERIOR: Interior Cabbiy padding with coral fleece cotton, hydronic heating for warmth. The heating is continuous and the heat is higher than other gloves. Carbon fiber heating wire: Using carbon fiber heating wire, it has long service life and high heat energy conversion efficiency. (Note: The correct way to use this product is to use a 5V 2A mobile power supply or any other power supply product that can match the USB plug. The reason is that this product cannot have a built-in battery, so it cannot store electricity. Secondly, this product has a USB plug, and the switch is on the USB Wire.) Specifications: Name: USB charging and heating Glove 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 deerskin Product lining: Coral velvet This product requires a 5V2 mobile power supply to generate heat (this Product does not include power bank) Package Contents: 1 * Gloves