Cal Spas Patio Spa collection offers relaxation at the push of a button thanks to our exclusive Plug-N-Play technology that allows for quick and convenient installation with a standard 110V outlet. That means you can begin enjoying your Cal Spas tub shortly after it arrives, without major alterations to your existing home. What's more, the spa's cutting-edge design was developed to give users a total body hydrotherapy session with every plunge, making it a conveniently installed tub that doesn't slouch on the comforting features found in our more robust models.