Perfect appearance low power Use the hi-tech carbon fiber PET,Keep warm at 70-85 degree assorted Plug and play, no need driver, make coffee beverage keep to 50 degree Celsius. But it will never burn hands; there is not any risk. Specification: 5V DC, 500mA Clear cable: 1.5m Heating temperature: about 70 deg. C Suitable for any type of cup Keep coffee/tea/drink warm at 40 - 50 deg. C Keep coffee/tea warm for any time interval With translucent power indicating On/Off switch No risk of burn, with enclosure made of quality insulation material Easy installation, no driver required, plug and play