About this product：
USB heated coffee mug- Come with USB Port, 1m Cable length.
Features:
1,To pour the water(25°C) into the cup and plug the USB cable into the computer USB port.
2,The water temperature have risen to 35-45°C after 1-2 hour.
3,The water temperature have kept the 45°C-55°C after a long time.
4,To pour the coffee(40 °C) into the mug.The coffee can keep the coffee at 45°C-55°C.
How to use:
1,To pour the drink into the coffee mug.
2,Open the Usb rubber plug at the bottom of the mug.
3,Plug the DC cable at the bottom of the mug and plug the USB cable into the computer USB port.
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