mug heater-5 years use life 1,Max temp 300C 2,12W/CM2 3,110V/220V 4,250W-500W mug heater1,Max temp 300C2,12W/CM23,110V/220V4,250W-500WHeight: 100mm ,105mm,110mm,115mm,120mm,125mm,150mmPerimeter:180mm, 200mm, 220mm, 235mm, 250mm Mug heater-5 years use life