Mechanical Hi-Beat Diver

From the retailer listing

Grand Seiko Mechanical Hi-Beat Diver SBGH257 For many years, the Grand Seiko Diver's watches have been in great demand from recreational divers. Today, the meticulous standards of Grand Seiko are expressed in a professional diver's watch for the first time. With a titanium case, an exclusive 9S hi-beat caliber and exceptional anti-magnetism, this new creation, with the Grand Seiko logo at the twelve o'clock position, pushes back the boundaries and takes Grand Seiko into an entirely new realm. A professional diver's watch, made the Grand Seiko way All the characteristics of Grand Seiko are here. Outstanding precision of -3 to +5 seconds a day, superb legibility, high durability, thanks to the high-intensity titanium case and bracelet and the distinctive clean edges that only Zaratsu polishing can achieve. This is unmistakably a Grand Seiko and yet no compromise is made in satisfying the n