Radio Controlled JDM Seiko SBTM337

Hey fellow watch nerds! I'm new here but I've been collecting watches for about 17 years. Recently stumbled upon the "Selection S" JDM range from Seiko, and as there's almost nothing about them in the Western watch world I thought I'd post a mini review. I believe these models came out in 2023.

Picked up my SBTM337 from Sakura Watches earlier this month, and I'm really pleased with it. Specs-wise it's a radio controlled solar quartz (7B72 movement) with titanium case and bracelet, AR coated sapphire crystal and 100m water resistance.

Movement

My QC experience of low/mid range Seiko mechanicals (4r and 6r) hasn't been great, so I was very happy to go with a high quality 6 jewel solar quartz movement with all the features you could hope for. All the hands are perfectly aligned, hitting their markers every time (the movement has an auto alignment feature that keeps them this way), it receives a strong time signal in the UK and has a 9 month power reserve (or 2 years in low power mode if kept in a dark place).

Dial

The crisp white dial features subtle pin striping, but in typical Seiko fashion it changes dramatically in different light, sometimes showing a sunburst effect and sometimes a slight sparkle like fresh snow. The date window has a polished and satin frame, showing excellent attention to detail. There's a few additional colours available including blue, black and all blacked-out PVD.

The hands appear to be PVD coated in dark grey with a slight bevel, providing excellent legibility and the similarly coated indices have a tiny ridged texture on top that plays beautifully with the light. If you look closely the applied markers and logo appear to float slightly above the dial surface, there must be a transparent layer that may be something to do with the solar cell. It adds another layer of depth to the whole effect.

The flat sapphire crystal has one of the best AR coatings I've seen, it's completely invisible 90% of the time, providing a wonderful view of the multifaceted dial and indices.

Case and Bracelet

Finishing on the case is great, with polished bevels and finely brushed tops and sides. It's also extremely slim and hugs my tiny wrist very nicely. The bracelet is even better, a solid 5 link design with excellent finishing, hidden clasp and superb comfort. Angled surfaces on the mid links are classic Seiko styling. No micro adjustments, but half links and light weight should ensure a comfortable fit for most people. Adjustment is straightforward, if you have the tools, with a pin and collar system. Seiko's "Diamond Shield" coating appears to be doing a good job, I've had a few knocks already but no visible marks 馃.

Niggles

It's really hard to fault this watch. I don't think there are any significant flaws, but a few areas that could be improved:

  • Crown is unsigned, a signed crown like my SARB033 would have been a cherry on the cake.

  • Lume is weak, I suspect the hands need to be thinner than mechanicals so the stepper motors can drive them, which might lead to weaker Lume than you might expect from a Seiko.

  • Female end-links would have been better, but I've got away with it even on my skinny wrists as the end-links angle down significantly.

I think these watches are a brilliant overall package for the money, a versatile grab-and-go option with some Grand Seiko vibes that'll always be running, always accurate within a second (if you live somewhere with a time signal), and robust enough for most use cases. A great alternative to the Casio Oceanus line with nicer dials and handsets and less divisive styling in my opinion.

What do you think?

Reply

Dials by seiko never dissapoint 馃コ

These high end quartz watches are very appealing to me, the "grab&go" aspect is something I have grown to appreciate lately.

I have been strongly thinking of getting a 9F caliber Grand Seiko, but the solar movt in this series of watches gives me pause...

And there is the Citizen Chronomaster range...

Ah, the abundance of options that is watch collecting.

w_tone

These high end quartz watches are very appealing to me, the "grab&go" aspect is something I have grown to appreciate lately.

I have been strongly thinking of getting a 9F caliber Grand Seiko, but the solar movt in this series of watches gives me pause...

And there is the Citizen Chronomaster range...

Ah, the abundance of options that is watch collecting.

The sheer engineering and manufacturing excellence that goes into the 9F and Chronomaster movements is another level, and those watches are probably a step-up in finishing and detail considering the price-points.

For pure functionality though, I think these solar radio movements are hard to beat. Forgot to mention it also makes a good travel watch as you set it by selecting the time zone with the crown, so changing time zone is super fast and the watch keeps running.

NexusSix

The sheer engineering and manufacturing excellence that goes into the 9F and Chronomaster movements is another level, and those watches are probably a step-up in finishing and detail considering the price-points.

For pure functionality though, I think these solar radio movements are hard to beat. Forgot to mention it also makes a good travel watch as you set it by selecting the time zone with the crown, so changing time zone is super fast and the watch keeps running.

The ease of solar and radio control are exactly the things that makes it maybe worth losing a bit in the fit and finish...

Def GS vibes! I love it. Great all-rounder.

Thats a beauty right there! I think my only niggle would be the Titanium... If this came in steel with a blue dial (and maybe it does, I haven't looked yet) this would be perfect for me! As it is, I'll stick with my Oceanus T200. Being the huge Casio fanboy I am 馃槀

I have a Casio Oceanus with v similar specs and looks - and I love it, set it once and enjoy.

If I didn鈥檛 have the Oceanus I would be thinking of getting one of these.

I鈥檓 trying to buy fewer watches in 2024! So it鈥檚 not helpful highlighting new, shiny, appealing things 鈥 馃槈

skxcellent

Thats a beauty right there! I think my only niggle would be the Titanium... If this came in steel with a blue dial (and maybe it does, I haven't looked yet) this would be perfect for me! As it is, I'll stick with my Oceanus T200. Being the huge Casio fanboy I am 馃槀

Steel with blue dial you say...

https://www.sakurawatches.com/seiko-selection-sbtm321

NexusSix

Steel with blue dial you say...

https://www.sakurawatches.com/seiko-selection-sbtm321

Oohhh, that's nice!! Probably not nice enough for me to get rid of my Oceanus - mostly because who in their right mind drops that kind of money on a Casio lol - but nice none the less! Thanks! :)

skxcellent

Oohhh, that's nice!! Probably not nice enough for me to get rid of my Oceanus - mostly because who in their right mind drops that kind of money on a Casio lol - but nice none the less! Thanks! :)

To be fair, I'd stick with the Oceanus as well if you want steel. Looks like Seiko fitted a worse clasp to the SBTM321 (it's in a cheaper price bracket to the titanium ones), whereas the Oceanus bracelets look nice.

The T200 and S100 are both great looking watches 馃寠