3 Temperature Settings -- Our coffee warmer for desk keeps your beverages at the temperature you want. After pressing the power button, the coffee cup warmer for desk defaults to the high temperature 149- 170. You can choose temperature between 130(104-130), 150(131-150) and 170(149-170) through touching the button. he bottom and sides of the mug warmer are made of heat-resistant material, so you don't have to worry about burning your hands and damaging the table. The waterproof and heat-resistant material makes the coffee cup warmer more secure and . For Most Mugs -- Whether the bottom of the cup is flat or not, our mug warmer for desk can play a good insulation effect. The diameter of the heating plate is 3.75in fitting more cups. For your safety, please do not use heat-labile containers such as paper and plastic cups. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on color:Black Material:Aluminum alloy + plastic size:150 x 120 x 25mm Voltage: AC220V Package Contents: 1 x warm coaster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.