USB Coffee cup warmer with 3 temperature settings

An open box (no box) Never used USB coffee cup warmer PI Heating Method] Mug warmer glass ceramic panel, PI heating method, all round heating, high thermal conductivity [3 Temperature Settings] Coffee mug warmer 55 degrees Celsius / 131℉ constant temperature, 70 degrees Celsius , 90 degrees Celsius , 110 degrees Celsius 158℉, 194℉, 230℉ can be set [Power Supply] Cup warmer 5V voltage power supply, safe and stable, touch the power to turn on [Easy to Carry] Tea warmer is small in size, and has high adaptability. It can be used in ceramic cup, glass cup, and metal cup

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