Features: 1.Automatic Power Off: The thermos coaster is designed with an automatic power off function, ensuring safety and energy efficiency. 2.Smart Constant Temperature Heating: The heating coaster features smart technology to maintain a constant temperature, keeping your drink warm without overheating. 3.Three Temperature Control: The uniformly heated coaster offers three temperature control settings, allowing you to choose the perfect temperature for your beverage. 4.Concave Plate & USB Power Supply Design: The coaster& 39;s concave plate design prevents spills and the usb power supply allows for easy use in various settings. 5.Low Noise Quiet Low Power Warmer: The warmer operates quietly and with low power consumption, making it ideal for use in quiet environments such as offices or schools. Perfect for both men and women, this coaster is great for heating coffee, milk, or water in both home and office settings. Specifications: Product Size: 130*117*23mm Material: ABS+ metal Input Voltage: 5V Input Current: 2A Rated Power: 10W Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. 1 * Cup Mat