Description:This cup warmer mat is made of high quality walnut wood and metal materials, heating evenly, safe and durable to use, has natural walnut wooden grain and smooth to touch. It powered by any devices with output 5V USB port, such as your computer, desktop, laptop, tablet, mobile power and so on, easy and convenient. Great for use at home and office, keeping you brew warm on cold days.Features:Made of high quality walnut wood and metal materials, heating evenly, safe and durable to use.Powered by any devices with output 5V USB port, such as your computer, desktop, laptop, tablet, mobile power and so on, easy and convenient.Light weight and compact size, easy to carry and suitable for most stainless steel cup, feeding bottle, ceramic cup, glass cup, etc.Keep your coffee, tea or other hot beverage warm up to 80℃, do not worry about high temperature and high oxidation, safe in use.Great for use at home and office, keeping you brew warm on cold days.Specification:Condition: 100% Brand NewMain Material: Wood + MetalType: Bright Wooden Grain, Dark Wooden Grain (Optional)Power: 5WVoltage: 5VElectric Current: 1000mAMax Working Temperature: 80℃Wooden Grain Width: Approx. 16mm / 0.62inchMetal Plate Diameter: Approx. 75mm / 2.95inchWhole Diameter: Approx. 103mm /