Made of heat resistant PVC and electronic component, safe and durable. USB cal heating pad coasters, keep your coffee/tea warm, stylish and practical. Decorate and protect your table with this fun and creative tableware placemat. Built-in constant temperature protection circuit, automatic power off protection when the internal temperature is higher than 90 during operation. Suitable for home, office, coffee house, etc. Description:Made of heat resistant plastic and electronic component, safe and durable.USB cal heating pad coasters, keep your coffee/tea warm, stylish and practical.Decorate and protect your table with this fun and creative tableware placemat.Built-in constant temperature protection circuit, automatic power off protection when the internal temperature is higher than 90 during operation.Suitable for home, office, coffee house, etc.Specification:Material: PC PU Leather Electronic componentWorking Voltage: 5VWorking Current: 1.5APower: 7.5WSurface Heating Temperature: 70-75Size(DxT): Approx. 10.8x10.5x1.6 cm / 4.25x4.13x0.63 inchPackage Includes:1 Piece USB Warmer Cup MatNote:Please allow a slight difference between the size from the above and the actual item due to manual measurement.Due to the difference between different monitors,there could be a little color difference acceptable, please kindly note.