Multifunctional Mug Heated Coaster

This 10w mug coaster is compact. It is made of abs and aluminum alloy. The cup heating device is used to keep the water, coffee, milk and tea in the cup at a constant temperature of about 50 degrees celsius to maintain a good taste. When the phone is fully charged, it will automatically disconnect and prevent the battery from overcharging. It has a switch that can choose to charge the phone or maintain the beverage temperature, no battery, usb plug-in works, android interface. Complies with Prop 65. 6.89" L x 3.74" W