FEATURES AND OPTIONALSFILTER SYSTEM: CARTRIDGENUMBER OF SEATS: 8/9NUMBER OF UPPER HYDRO JETS: 24NUMBER OF LOWER HYDRO JETS: 16HYDROMASSAGE AND COLOUR THERAPY ON SEAT:(8 OPT)BOTTOM AIRPOOL: 24SEAT AIRPOOL: (47 OPT)HEATING SYSTEM: 3KWOZONATOR: OPTIONALEDGE MOUNTED COLOUR THERAPY LED LIGHTUPPER COLOUR THERAPY LED LIGHT: OPTIONALLOWER COLOUR THERAPY LED LIGHT: OPTIONALCUSHION: OPTIONALFITTINGS FOR HEAT EXCHANGE: OPTIONALSIDE PANELS: OPTIONALTHERMAL COVER: OPTIONAL