
Watches & Wonders 2023: Grand Seiko Updates Evolution 9 with Automatic Chronograph
From JustLuxe content partner iW Magazine 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 Escapement. The existing GMT chronograph within Evolution 9 is powered with Grand Seiko’s Spring Drive technology (Caliber 9R96). With these technical enhancements, Grand Seiko says the Tentagraph will retain its power reserve in chronograph operating mode for seventy-two hours, which the watchmaker calls the “longest…