Pure Spa provides relaxation at the touch of a button. Control panel activates bubble jets surrounding the interior of the spa for a refreshing massage. Includes an operational control unit panel. Heating system adjusts to fit temperature preference. Includes (1) Extra Twin pack of filter cartridges for lasting enjoyment. Meas. approx.57"inner diam./77" outer diam. x 28"H. Incl.(2)head rests Holds approx.210 gal.Max seating cap.:4 adults.ETL list.Inc cover. Instructional DVD (run time:approx:14 min).1 yr.LMW.Imp.Model 28405E.