Our exclusive Master Force ™ Bio-Magnetic Therapy System is standard equipment on all Master Spas hot tubs. Used for centuries to relieve pain, improve circulation, reduce swelling and relieve stiffness, magnetotherapy is reborn in modern medicine. Today, more and more doctors and physical therapists are using magnetic therapy to treat back problems, arthritis and sports injuries. Almost 70% of all professional athletes regularly use magnetic therapy to relieve pain and improve performance.

The Master Force bio-magnetic therapy system applies magnetic therapy to pressure points in the neck and back with the strategic placement of strong magnets behind the StressRelief Neck and Shoulder Seat ™.