Japanese watchmaker Grand Seiko has been synonymous with high-beat precision and technical innovation for so long that a mechanical chronograph might seem somewhat overdue. This is the same brand that created the revolutionary Spring Drive movement, after all, which combines quartz crystal with mechanical components to deliver the best of two worlds. With the new Tentagraph sports watch, yet another historic chapter unfolds.
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Meet Grand Seiko’s New Tentagraph Sports Watch
The Tentagraph hails from Grand Seiko’s Evolution 9 collection and “evolution” is right as this automatic high-beat chronograph is the first of its kind. While the brand is no stranger to complex pieces such as the Kodo Constant Force Tourbillon SLGT003—which turned heads at Watches & Wonders 2022—they’ve never released a mechanical chronograph until now.
At first glance, the Tentagraph strikes a prime visual balance between the tenets of a classic sports watch and Grand Seiko’s enduring design language. A near-symmetrical display makes clever use of depth and texture with three recessed sub-dials and a date window, all positioned perfectly so as to offer maximum readability to the wearer. Peer close and you’ll notice a signature dial pattern inspired by Mt. Iwate, a majestic peak visible from the brand’s Studio Shizukuishi.
A Logical Evolution
Grand Seiko places extremely high value on performance, precision, and durability, and the Tentagraph falls directly in line with this overarching philosophy. Features such as a scratch-resistant ceramic bezel and tachymeter scale impart functional underpinnings but never overpower the watch’s clean and legible aesthetic. Meanwhile, the case and bracelet are constructed from high-intensity titanium, which is about 30 per cent lighter and more scratch-resistant than stainless steel.
At the heart of the Tentagraph is a high-beat precision movement with a power reserve of 72 hours (making this the longest-running 10-beat chronograph in the current market). It rounds out the evolutionary theme by using the brand’s ultra-slim and masterful Calibre 9SA5 as a base. Turn the watch over and you can see the complex movement in action through an exhibition case back.
Measuring 43.2mm in diameter, the Tentagraph brings Grand Seiko into mechanical chronograph territory while staying true to the performance and design values that continue to define the brand. With its legible layout, high-precision movement, and expert use of material, this is a true marathon runner of a sports watch that will stay the course and look downright sleek in the process. Score one now for $20,500 through the brand’s website or select boutiques.
