Number of people on the lounger/seated: 1 / 2 Water massage nozzles: 25 Air adjustment knobs: 1 3-way valves: 1 Heating: 3Kw Massage pump, 2-level: 1 pz (2 HP) Control system: Balboa (USA) Anti-frost system: Yes Ozonator: Yes Colour therapy: Yes Side panels: Yes Thermal cover: Yes Outdoor Use