Do you wanna a mug warmer? Do you like to drink hot water in daily life? This item will be a good helper for you. This cup warmer is a great choice for keeps your coffee warm all day, great helper to create a better life. Choose one for your lover, friends and family. Features - Color: Assorted Color. - Material: Plastic. - Size: 10.00X10.00X2.50cm/3.93X3.93X0.98in. - Design: indicator light - Mode: Maintain constant temperature and heat, and the surface heat temperature is between 75-80 degrees - Usage: Support computer USB socket and output power supply above 5V1.0A - Water temperature: The water level in the container is maintained at 40-45 degrees. The ambient temperature and container style will affect the water temperature - Note: It is not recommended to use uneven bottoms, vacuum flasks, blow-molded bottles and cups with thick bottoms, as they will affect the heat preservation effect - Its material is , it is not easy to fade or break, and it can be used for a long time. - It is easy to use and easy to clean, which brings great convenience to your life. - Powered by USB port, you can use it with your computer, desktop, laptop,mobile power and so on, easy and convenient. - , fast heating, and safe to use. One-button design, convenient and convenient to use. - The surface of the coaster is non-slip design, so there is no need to worry about the cup slipping. Package list: 1 x Coaster