Filter system: Cartridge Number of seats: 5 / 6 Number of upper hydro jets: 24 Number of lower hydro jets: 16 Bottom airpool: (24 opt) Seat airpool: (47 opt) Heating system : 3Kw Indoor and Outdoor use Ozonator: opt Upper colour therapy LED light Lower colour therapy LED light: opt Cushion: opt Fittings for heat exchange: opt Side panels: opt Thermal cover: opt