Portable Constant Temperature Insulation Mat For Heating In Winter Maintain Optimal Temperature This Coffee mug warmer not can slow down the speed of hot coffee, but also can heat up to 40-60. And keep this temperature whole day, which is neither too hot nor too cold. You can sip at any time, without waiting. Auto-induction Connect the power supply, the digital display position appears two bars and flashes without heating. It means there is no cup. Put the cup on, the digital display position shows the gear, and coffee warmer senses that the cup will automatically jump to the adjusted gear and heat it. Timing Setting The button on the left is the timing button. Click the timer button to enter the timer shutdown mode, from 1-9 hours. The digital display 1 means that the warmer will be closed after 1 hour, and the timer shutdown function will be cancelled when the number is not displayed. Suitable for Most Cups The cup warmer plate is suitable for Metal, Ceramic, Enamel, Tile, High Temperature Plastic and etc. Tips: Use a mug with thin-wall, flat-bottom will get the best warming performance. And not suitable for vacuum cups. Winter's Gift The mug warmer is gathered with aluminum alloy, waterproof easy-to-clean conductive glass surface and extended plug for different scenarios. Perfect gift for