... free, and over all efficient. 3)This professional 18 quart stone heating unit maintains a constant, even temperature so yourmassage ... ; 4, energy ShiYi foreman therapy; 5.hot stone heater;6, energy stones medicine and pharmacology, wine kang therapy. Specificationinner ... 26cm outer packing size:65x47x28cmgross weight:9.25kg net weight:6.6kgVoltage: 110v/220VPower: 1450WCapacity:8 L 3.payment:-Sample ...