Keep your mug of water?? tea?? coffee?? milk or other beverage at 40-60??</br>Making you enjoy hot drinks whenever you want it</br>With attractive aluminum alloy appearance?? this item is a perfect accessory for you to enjoy your drinks both at home and in office.</br>With quality heating elements and 5V USB power supply?? safe and reliable</br></br>Product Description</br></br>For 5V USB power supply <br>1. Wipe off the water on the mug. <br>2. Connect the product to the USB port of the computer or charger. <br>3. Put the mug on the beverage warmer. <br>4. The light is on when the prod