COMBINATION AIR& HEAT MASSAGE：The soothing massage system combines the air of the bubbles and the heat of the spa to create a relaxing oasis in your backyard. DIGITAL CONTROL PANEL: Allows you to heat the water to a blissful 104 degrees Fahrenheit and control the flow of massage bubbles, plus each spa includes a power-saving timer that allows you to control the temperature of the SPA up to 72 hours in advance. MULTIFUNCTIONAL SPA PUMP: In addition to heating the water, the multi-function pump aerates the spa and regulates the filtration system to keep the water fresh and clean. CHEMICAL CONNECTION DISPENSER : The included chemical dispenser distributes stable chlorine evenly throughout the space, keeping the water clean and healthy. 3X REINFORCED MATERIALS: The spa's Inflatable Walls and internal beams are made of durable, puncture-resistant materials that can resist damage add longevity and strength. This internal structure prevents stretching and expansion, allowing the spa to maintain the same shape no matter how many times it is inflated and deflated.