Editor
A year after Grand Seiko introduced complicated and sporty models to its Evolution 9 Collection, the watchmaker adds its first automatic chronograph to the collection.
The new Grand Seiko Tentagraph.
The new model, the Tentagraph, features Grand Seiko’s high-beat (36,000 mph) movement, Caliber 9SA5, which is enriched with two barrels and an ultra-efficient Dual Impulse…
