This am-534l 3 person Lounger spa by American spas features 34 jets crafted to maximize spa performance and deliver the highest quality hydrotherapy and relaxation experience. Designed to exceed expectation, American spas use a patented 7-layer laminate system, known as Fiber steel construction, which is reinforced with steel and wood to create the strongest shell in the industry. To further ensure durability and performance, this spa is built from the thickest acrylic available to keep the shell strong at critical stress points. And with the highest resin-to-fiberglass mixture and thickest fiberglass backing in the industry, you can feel confident that your new spa is built with quality. This spa includes a freedom sound system with 4 waterproof speakers and a subwoofer for incredible sound. The built-in wireless Bluetooth technology lets you control your music through a smart device from anywhere inside or outside your hot tub. Designed to meet strict standards in efficiency, insulation and sanitation, this 3-person Lounger spa uses smart technology to run efficiently and use less energy. Insulation keeps hot water in and cold weather out to reduce power needs and the energy Saver thermos layer insulation blanket provides an extra layer of protection for your hot tub from the elements. To protect your spa and investment, a premium hydro-armor tapered spa cover provides the final layer of insulation and protection. Energy-efficient and rated to withstand 1,500 uv-hours of protection to prevent cracking, splitting, or fading, the hydro-armor tapered spa cover is designed with a tapered height that angles downward from the center to the sides to drive off rain and prevent precipitation from pooling.