JNH Lifestyles Heritage 3 Person Hybrid Far Infrared Sauna 8 Carbon Fiber Heaters, 5 Year Warranty 8 Carbon Fiber Far Infrared Heaters, ETL Approved, Best performace Double layer Hybrid Wester Canadian Red Cedar Wood and Canadian Hemlock T&G timber, Best insulation UL Listed components and ETL Approved, Use with confident. 5 Year warranty! Built-in AUX control and 2 Premium Speakers. Digital control that allows you to control the temperature and the duration of use of your sauna.