... used sizes:Diameter 120mm,125mm,150mm and 155mm Plate heater,plater warmer1,110V/220V,300W2,Normally used ... material, silicon rubber can make the mug heater and plate heater long life time.6, The etched foil ... the life of the mug heater and plate heater.7, High resistance to corrosion. Plate heater specifications:1, Max temperature: ... Voltage: 110/220V,5, Wattage: 250W-500W Plate heater,plate warmer