Philip Stein Signature Ladies Brown Lizard Strap Dual Time Watch 1-MB-ZBR The Philip Stein Natural Frequency Technology is delivered to wearers through a metal disk inside the watch that was infused with key frequencies in a proprietary process. When worn, 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, 27 mm x 42 mm, 10 mm thick, Screw-in case-back with two sapphire crystal windows revealing the Natural Frequency Technology chips Polished stainless steel bezel, Black dial with guilloche frame, Silver-tone luminescent hands, Silver-tone Roman and Arabic numerals Bottom dial displays an additional time zone, Sapphire coated mineral crystal, Swiss quartz movements Water resistant to 3 ATM/30 meters/99 feet, Brown lizard leather strap, Pin buckle