1) Dimensions:900x900x1900mm2)Power usage/Power:110V, or 220V, or 240V and so on/1200W 3) Operating temperature: 15---70C 4) Materials: hemlock, Russia spruce 5) Designed for 1 person 6) 3 wide-frequency heaters system Features: 1) KERAMOS heating system 2)Toughened glass windows on doors 3) Single digital control system 4) Ergonomic comfortable backrest and bench 5) Reading lamp 6) Ventilation system