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, when wearing Philip Stein watches. Stainless steel case, Stainless steel screw-down caseback with sapphire crystal, Polished stainless steel bezel, Silver dial with guilloche center, Applied Arabic numerals and luminescent dots, Silvertone luminescent hands, Sweep second hand for the chronograph, Small seconds subdial at the 6 o’clock position, 24-hour time display at the 3 o’clock position, chronograph minutes subdial at the 9 o’clock, Date at the 6 o’clock position, Yellow silicone strap, Adjustable pin buckle, Sapphire coated curved mineral crystal, Swiss quartz movement, Water resistance : 10 ATM/100 meters/330 feet.