Not all images were able to load for printing. Please close the print window and try again. The new Grand Seiko Sunrise Tentagraph Limited Edition SLGC006
Titanium and rose gold paired with a new Mt. Iwate pattern, resulting in a chronograph with strong presence.
Released in 2023, the Tentagraph was Grand Seiko’s first-ever mechanical chronograph… I know, it sounds weird for a brand with about 65 years of history, but all of its chronographs used to be based on a Spring Drive architecture (calibres 9R86 and 9R96) until the launch of the SLGC001. Using the Evolution 9 platform, the Tentagraph combined the updated design language with an innovative automatic base movement. Following the initial dark blue edition, the ice-blue SLGC007 and the polarising Tokyo Lion Tentagraph SLGC009, it’s now time for the Sunrise Tentagraph Limited Edition SLGC006 to join the ranks of GS’ mechanical chronographs.
The new Sunrise Tentagraph SLGC006 is an evolution of both the SLGC001 and SLGC007 models, as the SLGC009 clearly stands apart with its much sharper case design, despite using the same movement. As such, we’re looking at a sizeable sports watch, classic from Grand Seiko in terms of proportions and design. That being said, the Tentagraph is a nicer watch on the wrist than all previous Spring Drive chronograph models, measuring over 44mm in diameter and 16mm in thickness.
Made of High-Intensity titanium (equivalent of grade 5 titanium), the case of the GS Sunrise Tentagraph measures 43.2mm in diameter, 15.3mm in thickness and 51.5mm in length. It seems large on paper and is large on the wrist, yet the Evolution 9 collection also redefined ergonomics, and it feels in this watch, with a lower centre of gravity and a profile that nicely hugs the wrist. The case is classically finished with mostly brushed surfaces and Zaratsu polished accents, a box-shaped sapphire crystal on top, a screwed sapphire caseback and a screw-down crown, guaranteeing a comfortable 100m water-resistance.
While the SLGC006 retains most technical and design elements of other Tentagraph models, including the black ceramic bezel with tachymeter scale, it also brings several 18k rose gold accents, including the crown and pushers, as well as a new frame around the bezel. These gold elements are quite discreet and blend nicely with the darker tone of titanium, as well as echoing the colours found on the new dial.
Indeed, while being part of the Mt. Iwate range, this Sunrise Tentagraph inaugurates a new, more striking pattern as well as a new, bold colour scheme. A free interpretation of both the ridges and rough surface of this mountain, and of the classic sunray-brushed surface of so many watches, the new Mt. Iwate pattern is here deeper, richer in texture. It is, in fact, based on the same idea as the Ice-Blue SLGH027. In addition, Grand Seiko also presents a new colour, a light (and rather hard to capture) copper-pink tone, paired with burgundy/brown sub-dials for the chronograph, and a darker copper-pink sub-dial for the small seconds. All the hands and applied markers are plated in rose gold and filled with luminescent material.
Inside the Sunrise Tentagraph SLGC006 is the same high-beat Tentagraph Calibre 9SC5. It is built upon the Calibre 9SA5 base and incorporates a chronograph module on top, while maintaining exceptional performance. The Tentagraph operates at a 5Hz frequency (36,000 vibrations per hour) and features a double-barrel layout that delivers a 72-hour power reserve. The movement also utilises Grand Seiko’s advanced Dual Impulse Escapement with a free-sprung balance, ensuring precision with a mean daily rate of +5 to -3 seconds per day – even when the chronograph is engaged.
Pairing with the case, the bracelet of the Sunrise Tentagraph is made of High-intensity titanium and measures 22mm at the lugs. It is closed by a three-fold clasp with push-button release (no micro-adjustment yet, only the Spring Drive UFA reference SLGB003 has this), and an 18k rose gold “GS” medallion.
Released in a limited run of 300 pieces and available in October 2025, the Grand Seiko Evolution 9 Sunrise Tentagraph SLGC006 will be priced at EUR 23,000. For more information, please visit Grand-Seiko.com.
8 responses
Too big, too thick, too expensive. Trim the size, refine the hands and indices, drop the date and then maybe you can go head to he’d with some of the top offering. For 23k euros I’m getting a gray market daytona thank you.
100%. I also am not a fan of bits and pieces of an other metal. Put it in the bracelet and the bezel.
A Japanese beauty with a strong strong presence.
I love the design, i know the quality is tip top (is a GS 🙂 ) and the movement is excellent.
At least no one will mug you on the street and rob you for it. That may be the best reason to buy a Grand Seiko.
I’m sorry but +5- -3 seconds per day does not excite me. While this and other GS watches are really nice looking if it is not the one that is plus or minus less than 10 seconds per YEAR, I can’t get excited. My $350 Casio Oceanus has no where near the wrist presence but it is accurate to less than one second per day and it is recalibrated daily via radio signal. So basically it is within one second of the atomic clock at all times.
Terrible, from the incredibly unrefined, butch looking hands, through the thickness, and finishing on the price, which for no apparent reason is higher than comparable or better chronographs from… everyone: Omega, Rolex, Breitling (better chronometry specs, thinner, dedicated movements instead of modular, …).
This fails on literally all levels.
I like the color way. But a modular chrono movement, case over 15 mm thick and still no on the fly micro-adjust…c’mon GS. For 23k theres much better options. Probably why this is limited to 300 pieces.
Just SHIT.