usb cup warmer Features:
1) Keep coffee/tea/drink warm at 50 ~ 60 °C
2) Easy installation: no driver required

 usb cup warmer Features:
1) Keep coffee/tea/drink warm at 50 ~ 60 °C
2) Easy installation: no driver required, plug and play
3) Rated power: 2.5W 5V DC
4) Red LED indication when warmer is turned on
5) Quality insulation material around the hotplate prevents burns
6) USB powered, no battery needed