With die-cast heating element Mini and portable design Ideal for heat preservation Made of iron Easy to clean,Compact and portable Diamenter:185mm+155mm(150mm for 4 tube+125mm for 3 tube) AC220-240V/110V 50-60Hz POWER:2250/2500W, N.W:2.3KG G.W:2.8KG Quantity(20’):1695 Quantity(40’):3390 Quantity(40HQ’):4270