SPECIFICATIONSBrand Name: tontinOrigin: CN(Origin)Production License: 20150009Material: JADEIngredient: Jade glazeModel Number: Multi sizeSize: MediumOriginal place: ChinaVoltage: 220V and 110V Notice Part of countrys customers choose the free shipping express we will ship out by e-EMS;EMS,FEDEX,UPS or TNT (in these expresses we will choose the cheapest and easy for customs clearance express) Detailed Product Description there are 220V & 110V of the heating box,we will ship to you according to your country Usage:after plug in about 25-6