The Reactor Gravitron is the ultimate in tide watches, featuring tide chart accuracy for 275 worldwide locations through the year 2015. Over eight million data points were compiled and programmed into the Graviton’s memory to ensure the highest possible accuracy. Custom beaches can be also be added, allowing the Graviton to provide accurate information for thousands more locations. On top of its cutting-edge technology, the Gravitron also features high-quality craftsmanship with state-of-the-art materials. This men’s watch is built to last, with a solid, marine-grade 316L stainless steel 45-millimeter case and a durable, poly-leather wrist band. The watch also features a secure “screw bar” case-to-band interface, which provides five to seven times the strength of traditional spring bars; and the hardened mineral glass crystal offers extreme scratch and shatter resistance. The watch sports a black LCD dial display with a unique dual-mode design : the LCD can be turned completely off at the touch of a button, to create a clean analog watch look; press any button again, and the full screen LCD comes to life displaying tide info, dual time, date, stopwatch, and multiple alarms and countdown timers. With a thick, forged caseback that includes an integrated O-ring, the watch provides superior water resistance to a depth of 200 meters : like all Reactor watches, it is individually tested to its depth rating. Swiss quartz analog movement allows the Gravitron to provide exceptional timing accuracy.