USB Warmer Pad Warm Cup Mat Heating Device Office Coffee Tea Warmer Pad Mat Table PU Heat-Resistant Electric Insulation Coaster Features: Safe and reliable This cup coaster is safe and reliable built-in constant temperature protection circuit automatic power-off protection above 90 degrees. Artificial leather surface Artificial leather design soft noble and elegant can reach the surface temperature of 85 degrees not easy to burn hands. Scopes of applications It is versatile ceramic cups glasses metal cups etc. can be used. Fast warm up Efficient concentrated heater ensures being evenly warmed in minutes keep the best temperature for taste. Specification: Type:Cup Coaster Material:PC PU Metal Color:Blue/black/orange Quantity:1pc Item Size:10.5*10.5*1.2cm/4.1*4.1*0.5"(L*W*H) Net Weight: 104.3g/ 3.7oz Package: 1*Cup Coaster includes: "