Hot tub A. Function: Hydro massage function Bubble function Fm radio receiving Constant temperature function Ozone sterilization Water filter Computerized control panel to control hydro massage, bubble, temperature setting and fm radio Water heating and temperature setting Water whirl function . Under water light B. Specification Power for hydro massage: 2x2p pump Power for bubble: 1x1.5p pump Water filter pump: 1x1p pump Constant temperature thermostat: 3kw power Underwater light: 4 x dia.40mm Size of massage nozzle 37 sets Size of nozzle for bubble: dia. 40mm 18 sets Body of tub is made of acrylic Voltage of power: 220v Frequency of power: 50hz~60hz -f Wood