Cal Spas Hot Tubs, Spas and Swim Spas for Sale. Cal Spas Escape E750B Spas. Allow the Cal Spas E750B with 50 hydrotherapy spa jets whisk you away to a tropical paradise. You and your family will enjoy six comfortable seats that conform to your body's natural lines to deliver uninterrupted hot tub relaxation. Lean back and relax as comfortable pillows caress your head. The included waterfall soothes your mind with relaxing sound of falling water. Visit us at www.calspas.com.