Filter system: Cartridge Number of seats: 5 / 6 Automatic bath filling: Yes Automatic bath draining: Yes Number of hydro jets: (40 opt) Number of plus hydro jets: 20 Heating system: 3Kw Ozonator: Yes Indoor and Outdoor use Upper colour therapy LED light: opt Lower colour therapy LED light: opt Cushion: opt Fittings for heat exchanger: opt Side panels: opt Thermal cover: opt