Grand Seiko Hi-Beat 36000

A 10 beat caliber beats at ten times a second, a rate substantially faster than that of ordinary mechanical movements. While the faster vibration rate makes a watch more resilient to shock and thus more accurate, it also consumes more power from the mainspring and demands greater resiliency from other components. For half a century, Grand Seiko mainsprings have been manufactured in house. Using all this experience, a new alloy was created for the 9S mainspring which has the strength and durability to deliver 55 hours of power reserve and to do for generations.

The SBGJ217 is an iconic piece of the Grand Seiko Hi-Beat 36000 GMT series. The 39.5 mm stainless steel case of this piece classically pairing with the retro-modern Grand Seiko style dial that matches any attire. Like every Grand Seiko watch, it offers highly polished, distortion-free surfaces, razor edged hands for high legibility and perfect comfort on the wrist. The long and slim markers provide a clean and refined expression. The hi-beat GMT movement 9S86 is designed, made, assembled, adjusted and tested at the Shizuku-Ishi Watch Studio in where all Grand Seiko mechanical watches are manufactured and assembled, by hand, by the studio’s craftsmen and women. In both performance and appearance, it expresses the very best of Seiko’s mechanical watchmaking. The caliber has a high accuracy of +5 to-3 seconds a day and a power reserve of 55 hours with 36,000 vibrations per hour at 10 beats per second. The GMT hand can be used as a dual time indicator with the hour hand being adjustable independently as the time of day hands continue to mark time. It is the perfect watch for international travelers.