The Philip Stein Natural Frequency Technology is delivered to wearers through a metal disk inside the watch that has been infused with key frequencies in a proprietary process. When worn on the wrist, the watch exposes frequencies to the biofield - which is the master energy field that regulates the body's functions - and informs the body to relax and become more resistant to stress. Studies have shown, better sleep, less stress, clearer focus and better concentration, for wearers of Philip Stein watches. . . . . . . . . . . . . . . . . Brushed stainless steel case (40 mm in diameter, 10 mm thick), Screw-in case-back with sapphire crystal window, Polished stainless steel bezel set with 54 diamonds (1.17 carat), Fasion mother of pearl dial with silver guilloche center, Black luminescent hands, Black Arabic numerals, Small seconds sub-dial at the 6 o'clock position, Sapphire coated mineral crystal, Swiss quartz movement, Water resistant to 3 ATM/30 meters/99 feet, Black alligator leather strap, Pin buckle, Model number: 42D-FMOP-AB.