1)Material: Acrylic(Fiberglass Reinforcement) 2) Main components: a) 7 big hydro massage jets b) 1 x 2HP whirlpool pump c) 2 Air-driven swith (On /off) d) Whirlpool Intensity Adjustor e)Backwaterf)Overflowg) Drain (48mm, end 48mm) f)Stainless Steel stand 3) Options: a) Computer control panel (including FM radio, 1 x underwater light Ac12v,20w) b) Wooden skirt c) Hearter(4.5kw)(1-Backwater) d) Cover e) Cartridge filter(1-Backwater) f) Air massage system (1-air pump 0.7kW, 20-24 jets) g) LCD color TV (7/12") h) DVD i) Ozonizer j) Wooden stair k) Pillows l) Insulation