High-beat precision and three days of power reserve come together in the new Tentagraph, Grand Seiko’s first mechanical chronograph. With a power reserve of 72 hours, the Tentagraph is the longest-running 10-beat chronograph on the market today.

SLGH005 captures the dynamism of the white birch tree forests near the studio in Shizukuishi, where all Grand Seiko mechanical watches are crafted.

The dial inspired by white birch forests at night.
This Hi-Beat 36000 watch shares the same Evolution 9 design as the celebrated ‘White Birch’ SLGH005 but is presented with a black dial that captures the atmosphere of the white birch tree forests on the Hiraniwa Plateau at night. These forests cover some 400 hectares and are located near the studio in Shizukuishi where all Grand Seiko mechanical watches are crafted.
Its powerful hands and grooved, prominent markers ensure perfect legibility. Its Zaratsu polished, distortion-free mirror finish and delicate hairline finish alternate to give the case a quiet and harmonious glow. The case has wide lugs and a low center of gravity that ensure that the watch sits easily and securely on the wrist.

The watch features a new textured dial inspired by the ridges of Mt. Iwate, which is one of the most active volcanoes in Japan. The first Mt. Iwate pattern dial appeared in 2006 and has since become deeply associated with Grand Seiko mechanical watchmaking. The dial of this new creation captures the timeless beauty of Mt. Iwate from the sky, with the striking light-blue hue evoking the purity of the air and water that surrounds this landmark.

Manual winding, high-beat precision, and 80 hours of power. Introducing a new dress watch in the Evolution 9 Style.