Including following function: 1) Material: Acrylic (Fiberglass Reinforcement) 2) Main components: a) 32 hydro massage jets b) 1 x 2HP whirlpool pump c) 1 Air-driven switch (On /off) d) 2 whirlpool Intensity Ajustor e) Backwater f) Overflow g) Drain (48mm, end 48mm) h) Stainless Steel stand i) 18 Air pump Options: a)Computer control panel (1-FM radio+2 speakers; 1-underwater light ) b) Wooden skirt c) Wooden stair d) Wooden skirt/stair rot-proof function e) Lockable warm Cover f) Heater (3 kw)(1-Backwater) g) Cartridge filter (1-Backwater) h) Massage system 32 Massage jets (Whirlpool pump) air jets (Air pump) i) TV DVD j) Ozonizer k) Pillows l) Insulation