News · Grand Seiko

Grand Seiko finally fixes the Evolution 9 clasp, and renews nine references while it is there

A three-step micro-adjustment clasp, Ever-Brilliant Steel cases and a black Lake Suwa dial arrive across five Spring Drive U.F.A. and four Hi-Beat models.

Hen & Mills Editorial · 4 min read · 16 August 2026

• Grand Seiko has renewed the core of the Evolution 9 Collection with nine references, five Spring Drive U.F.A. and four Hi-Beat mechanical.
• Every model gains a three-step micro-adjustment clasp working in 2 mm increments, a more tapered bracelet and, on seven of them, Ever-Brilliant Steel.
• Spring Drive models reach boutiques from September 2026 and the mechanical ones from October, at EUR 10,400 or EUR 11,700 for the titanium pair.

The clasp, of all things, is the headline

There is a particular kind of complaint that follows a brand around for years, gets repeated in every review, never quite rises to a scandal, and then one day is simply fixed. For Grand Seiko that complaint has been the bracelet. Everything else about an Evolution 9 has been extraordinary for a long time, and the thing that kept coming up in conversation was that a watch costing this much shipped with a clasp you could not fine-tune without half-links and a spring bar tool. That is over. Grand Seiko has renewed the core of the Evolution 9 Collection, and every one of the nine new references gets a three-step micro-adjustment clasp that moves in 2 mm increments, by hand, with nothing else required.

Fixing a clasp sounds like a small thing to lead with, and it is not. Two millimetres either way is the difference between a bracelet that sits where you want it in the morning and one that has moved somewhere else by the afternoon, and on a watch you are meant to keep for decades it changes the relationship. Grand Seiko has also given the bracelets a more pronounced taper than before, which does more for how a 40 mm case sits than any amount of case sculpting.

The other structural change is metallurgical. Seven of the nine now use Ever-Brilliant Steel for case, bracelet and clasp, an alloy Grand Seiko describes as a super stainless steel with a PREN corrosion rating above 40 and a brighter colour than the usual 316L. The remaining two are High-Intensity Titanium, about 30 per cent lighter and harder to scratch. Eight of the nine are 40.0 mm across and 11.7 mm thick; the ninth, SLGB015, is 37.0 mm and 11.4 mm.

Five Spring Drives, and a movement that is genuinely a step change

The Spring Drive half of the renewal, references SLGB007, 009, 011, 013 and 015, all carry Calibre 9RB2, the Spring Drive U.F.A. introduced last year. Ultra Fine Accuracy means an annual rate of plus or minus 20 seconds, which works out at roughly three seconds a month, and Grand Seiko's claim as of June is that it is the most accurate mainspring-powered wristwatch movement on the market. The engineering behind that is worth knowing: both the quartz oscillator and the integrated circuit are vacuum sealed against temperature, humidity, static and light, each oscillator is measured across several temperatures and the results programmed into the IC for thermo-compensation, and there is a regulation switch so a watchmaker can pull it back into line years down the track.

The dials are where the collection has always earned its money. Two of the five carry the Lake Suwa pattern in blue, now lightened so the texture reads like early sunlight on the surface of the lake rather than deep water, in 40 mm and 37 mm cases. The SLGB007 takes the same Lake Suwa pattern into black for the first time, on the moonlit-water idea, in titanium, and it is the most interesting thing in the group: a texture everybody knows in blue, reading almost as tortoiseshell under the light, with the pattern only fully visible when you tilt it. The remaining two revisit the white birch forest and the Atera Valley.

Four mechanical, and one dial I did not expect to like

The mechanical half, SLGH029, 031, 033 and 035, runs Calibre 9SA5 with its Dual Impulse escapement and twin barrels, 36,000 vibrations per hour and 80 hours of reserve, rated at plus 5 to minus 3 seconds a day and carrying 47 jewels. Getting 80 hours out of a five hertz movement is the trick that made 9SA5 notable when it arrived, and the horizontal gear train that allows it is also why the watch is 11.7 mm thick rather than considerably more.

Three of the four are white birch dials, in the original silver, a black version for the forest at night and a green one for birches in summer light, with the black in titanium and the others in Ever-Brilliant Steel. The fourth, SLGH035, takes the Genbi Valley pattern in pale blue, drawn from rock formations along the Iwai River. I have been mildly tired of Grand Seiko's nature dials, if I am honest, because the format has been repeated often enough to feel like a system rather than a series of decisions. The Genbi Valley in that particular blue is the one that got past my resistance: it is the colour of shallow water over pale stone, and it does not look like anything else in the catalogue.

The criticism worth making is not about these watches but about how the collection is presented. Nine references, five dial patterns, two metals and two movements is a lot of things that look similar to a person who does not already know the difference between a 9RB2 and a 9SA5, and the reference numbers do nothing to help. Grand Seiko makes some of the best watches on earth and names them like part numbers on a warehouse shelf. If you are going to hold on to a customer for thirty years, giving them something to call the watch would not hurt.

Grand Seiko Evolution 9 Collection renewal pricing and availability

Grand Seiko announced the renewal on 24 June 2026. The five Spring Drive U.F.A. models reach Grand Seiko boutiques and selected retail partners worldwide from September 2026, with the four mechanical models following in October. European recommended retail prices are EUR 11,700 for the two titanium references, SLGB007 and SLGH029, and EUR 10,400 for each of the other seven. Grand Seiko has not published an Australian recommended price for any of them, so the local figures will arrive through the boutique and dealer network closer to the release dates.