Specification:Item Type: Heating CoasterMaterial: ABS Plastic + Toughened Glass + AluminumColor: BlackProduct Size: Approx. 15x3cm / 5.9x1.2inWeight: Approx.366g/12.9ozPower Supply Voltage: DC5VPower: 10WRefrigeration Method: TEC semiconductor refrigerationApplication: Beer/beverage/juice/coffee/wine/yogurt, etc.Package List:1 x Heating CoasterProduct Instructions:1. This product must be used with the matching power adapter.2. Connect the power adapter correctly and place it on a stable table. Put the drink in the cup when in use, and then press the cooling or heating button.3. When the coaster is not in use, please press the run function button to stop the machine, and then unplug the adapter.4. When you are not using the machine or need to leave the machine, please turn off the power of the machine and unplug the power supply, and ensure that the machine is stable and reliable before leaving the machine.5. It is recommended to use a cup with a thin bottom to avoid the influence of cooling or heating.6. If you do not use it for a long time, please place the machine in a dry and well-ventilated place to prevent damage to the machine due to .