Sell USB cooler and warmer

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NO. ST-002
Name:USB cooler and warmer
It may keep your drink at ideal temperature its powed by USB port
It may keep your drink at about 600 when you put your cup at the working postion ofdevice.
(request the cup can transmit heat)
It may keep at about 160for your drink that taken out from refrigerator.
Itscompact and suitable for home or office
The usage:
*Put the products in the steady place after taken it from the packing.
*Put the switch on warmer or cooler postion.
*Plug the Usb cable into PC USB port.
*put the cup on the working postion. Now you may enjoy your life!