Usb Flash Warmer Cup(WT102)

1) Keep coffee / tea / drink warm at 50-70癈
2) Suitable for any type of cup.
3) Keep coffee / tea / drink warm for any time interval
4) No risk of burn, with enclosure made of quality insulation material.
5) Easy installation, no driver required, plug & play.
6) With large LOGO position.
6) Specifications:
a. 4.5VDC.500MA
b. USB Port, Clear Cable 1.2M
c. Box Dimensions:115x115x20mm
product Dimensions:110x110x20mm
  Heating Zone diameter:75mm
d. Heating area Temperature: about 70癈