Specification: Interface: USB Rated Voltage: DC 5V Rated Current: 0.76A Material: Durable soft knitting wool Color: Black, Dark Blue, Light Gray, Grey Material: Knitted USB cable length 156cm / 61.42in Product Dimension: 18.5 x 10 x2cm / 7.28 x 3.94 x 0.79 in Product Weight: 105g / 0.23lb Heating Mode: High: 47~50°C; Middle: 43~45°C; Low: 40~43°C 3 Levels Temperature Control There are three different heat settings - high 116~122?, middle 109~113?, low104~109?. Choose the appropriate temperature according to your need to achieve comfortable warming effect. Fast heating and warm up. Winter Warm Gloves Fast heating and warm up. There are three different heat settings, which is the most comfortable range for human body, you won't feel dry and over-temperature. Half Finger GlovesIt's half finger designed perfect for wearing while gaming, typing. Comfortable & Elastic Made from High-end knitting wool, ultra-soft, and super elastic, delicately knitted and hemmed. It offers full flexibility to your hand, durable soft & warm. Note: Please unplug the power when leaving or not in use to avoid accidents caused by excessively high temperature of the gloves caused by prolonged heating. Take out the heating sheet before washing. The gloves can be washed separately. If the heating sheet encounters water, please dry it before use. The rated power of the product is 5V 0.76A. Do not use mobile power sources higher than 5V, power adapters, and computer USB or USB-C ports above 3.0. (When the output voltage exceeds 5V 2A, the heating temperature of the gloves will be too high, which may easily cause burns). It is prohibit to charge it directly by AC power.