Description:<br>This mug warmer is in the shape of a donut, great to go with a cupof coffee or hot tea. Plug N Play USB technology allows this hotpadto work on any computer in any working USB port to keep yourbeverages hot.<br><br>Features&nbsp;&nbsp; &nbsp;<br>- Color: Yellow, black, white<br>- Material: Plastic, electronic components<br>- Size: About 10.5 * 10.5cm/ 4.13 * 4.13 inch.<br>- Operating Voltage: DC 5.0V.<br>- Operating Current: 1000mA(MAX)<br>- Power: 5W<br>- Power By: USB Power Cord Cable.<br>- Cute cookie designed for mug warmer, lightweight and portable,easy to tote and take anywhere.<br>- One button operation, just follow simple 3 steps, first connectthe USB cord to your computer or any USB port in order to get powerresources. Then, place your cold cup on the warmer mat. Finallypress the ON button to keep the cup warm and enjoy your hot drinks.