1) CE, RoHS, ETL, ISO9001 2) Carbon heaters, all voltages 3) Optional accessories: Color TFT TV, color therapy light far Infrared Sauna room/best sauna room,home saunaStandard:—Infrared Heating Panel—CD/AM/FM Stereo—Reading Light—Oxygen Ionizer—Exterior Lights—6mm Clear Tempered Glass—Cup & Magazine Holders—operating temperature:18-60°C Optional:Ceramic Heater /carbon heaterCedar woodBig panel CD ...