Backed by CE, CETL, RoHS and ISO 9001 certifications: internationally-recognized seals of quality, safety, and professional manufacturing Canadian hemlock construction insulates and resists scratching 4, low-EMF carbon infrared heaters; 1170 watts; operates up to 140 degrees F Dual interior and exterior LED control panels Integrated sound system with aux input Bronze-tinted tempered glass Requires 120v / 15amp power Seats up to two adults 7-year limited warranty on wood structure; 5-year heating and electronics; 1-year radio