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 °C2) Easy installation: no driver required, plug and play 3) Rated power: 2.5W 5V DC4) Red LED indication when warmer is turned on5) Quality insulation material around the hotplate prevents burns6) USB powered, no battery needed

4 Port USB Cup Warmer, USB mug warmer