1With USB cable, dual-purpose cooling and heating, fast cooling, constant temperature heating. 2Tempered glass, waterproof design, fast heat conduction, and safety protection against leakage. 3It can be applied to most cups on the market, and supports ceramic, glass, metal and other materials. 4Intelligent touch switch, temperature changes are clear at a glance, rapid cooling and heating, high sensitivity, and easy operation. 5The builtin semiconductor cooling chip consumes less energy, and the cooling effect can quickly reach the freezing point. 6A good choice for office, home, and gift-giving. Add a beautiful landscape to your desktop.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.Product 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 thinbottom 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 moisture. 1 x Heating Coaster1 x USB Cable1 x Instruction Manual1. Please allow 12in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. It is not suitable to use plastic bottles, double&8209;layer cups, and thick bottom cups. It is recommended that the bottom of the cup be flat. The function of this product is to keep warm and keep constant temperature. It cannot be used for boiling water