What the 8L35 Movement looks like... 

Wow! I can't believe you opened up your new watch for us; what a beautiful movement. I loved the macro shots. Thank you so much Bruce :)

thank you. appreciate you going the extra step to share the inside.

Awesome man! Very gutsy of you to open it up ! Thanks!

I love my Seiko SLA017 very much. Thanks for sharing the movement!

Thank you for a good analysis and good look at a beautiful watch engine.

Thank you for showing us. Definetly I knew that movement is really high end!

Thanks Bruce! So happy to hear this info. I love the SLA divers that’ve got 8L35s

Awesome Bruce, that was really interesting & informative!

Thanks Bruce, interesting and unique content as usual.

That was really Cool Bruce thanks for the effort 👍

Just now getting this video on my recommended. Thanks for sharing.

Thanks for sharing. Nice movement with great accuracy. 👍

Amazing finishing. Awesome!

Damnit Bruce! I love that watch! I need one to go with my Marinemaster 300.

Thanks Bruce. Your sage comments help me with buying the SLA 069, I’m expecting it soon (8L35).

Thank for sharing this...wear it in good health

Thank you Bruce!

Pure class.

Beautiful movement!

Really gorgeous dive watch. Just excellent execution and precision in the entire appearance of that edition. When you add the history behind it - its a great collectors piece from an important brand - and for a good price given what it represents. 👍

Class movement and great to see inside my (well, not mine, but you know) watch - doubt I will! The finish and precision of these high end Seikos is every bit up there with the big two Swiss. I'm loving my Willard and more so now I've checked out the Tokyo stripes!

Great movement, Great watch and Great brand. I also have the same Rolex as you have Bruce but Seiko is still my favourite brand.

Beautiful piece

It's little extra bonuses like these that I subscribe to this channel! 😀😀😀👍👍👍

Yes, I'd have a glass case back on there. How often will I dive - never. How often would I want to see that movement - a LOT. Stunnnnning. Gorgeous.

Wow stunning movement indeed!

Its a bit of an unknown fact in the western world. All 8L movements are hand assembled by the same watchmakers who make grand seiko and credor automatics. All done at the morioka plant. They operate on a three tier level of certification. Bronze, silver and gold. Basic is 8L, mid tier us grand seiko, top tier is credor.

8L35 is a gorgeous and solid movement!

That's is really a big jump on a decoration level from 8l35a to 8l35b.

Gorgeous movement!!!

Thanks for the welcomed review of the 8L35. I own the Seiko Marine Master SBDX001 with that movement but alas it’s running over 15s fast. I bought it used from the SCWF about 14 years ago & have never had it adjusted. The time has come to do so. I needed this kick in the pants Bruce!

Thanks for the watchmaker recommendation in Sugarhouse. Mine is in downtown SLC and I was looking for something closer. Thanks!

Thanks, that looks great. And not having a transparent case back, no problem it's meant to be worn.

Amazing video. This really helps the community and even in my 8L35 watched I never knew what it really Looked like!!! Looks better than any ETA especially ones from Panerai

thanks for opening the can to share with us!

Great shoutout to Sugar house in SLC, I live in Murray, I am still far away from a solid collection but I love my seiko 5 and turtle padi edition.

Great review! I just got the Seiko SLA075 with the 8L35 and unfortunately mine is running 12 to 13 seconds fast per day. I bought it brand new from my AD so I'm unsure if I'm going to keep it or return it. The movement however feels incredibly nice to wind and the second hand sweeps very smoothly. I was just a bit shocked that mine was running 12 to 13 seconds fast a day being that its a brand new updated and current 8L35 with the model I bought SLA075. The piece is extremely nice and it was also hand polished and finished in the Grand Seiko Studio. Thanks for sharing such great content. I found it interesting to see the 8L35 in all its glory.

Bruce always taking things up a notch!!!! WOW

Cool! SLA 025 and SLA 017 next!!!

Love it but pricey❗️👨🏼‍💻 Good review Bruce as usual and ty❗️

nice one thanks. close to purchasing one.

Great video thanks a bunch

Seiko comes out with beautiful designs and I was a big fan of the brand till I bought a timegrapher. My seiko vintages are way more consistent in performance than the new ones. Looking for ways to fit in the older movements in the new cases.

Nice watch man.

Hope he resealed it properly for the same WR rating! Thanks for sharing - lovely movement and impressive accuracy!

Gorgeous Porglorge striping on those plates.

I have three 8L35 formidable accuracy and very reliable

Cool, I'll certainly never see it in person.

Just wow.

Do you think its possible to swap this movement into a Seiko Presage? I kind of wish those came standard with these.

This is a fascinating video. I have wondered about the Seiko 8L35 movement's accuracy. This video confirmed for me what I suspected to be the truth. The 8L35 is a fine movement.

Very beautiful

Hello, Kindly confirm if the 8L35 is the same movement as the 9S55 ? If there is a difference what it might be ? Because I read that it is based on the 9S55 but couldn't understand what that means exactly. Thank you so much

thanks.for the video Bruce. My Seiko SARL004 keeps beating with its 8L35 movement

Great video! I wonder if you can get a sapphire display back for this watch?

very nice..

It’s beautiful, just awsome!

Best part is it’s real in house movement unlike eta clones which I happen to own lots of them. I acquired my first 8L35 SLA21 brand new 2300$ including tax I guess it’s a keeper.

TBH Bruce, in the german watch forum there is plenty of people that have really bad accuray borderline close of being out of the -10s/+15s factory specs. Its sad, but its not such a rare thing. My MM300 (SBDX017 from late 2016) is good at about +6s/d, its basically COSC, but if you spend that much, it should be better regulated, at least -5s/+10s out of factory. The movement itself is ofc pretty great. Albeit i think they could upgrade it now, the original 9S movement is advancing now. 50h PR is not bad though and so i think its good enough right now.

Great to find watch enthusiasts in SLC

Missed this when u posted 3 whopping years ago! Love these 8L movements and now paying attention to these in the more “upmarket” pieces like the SLA 017, 037, and related divers. While it’s sort of understandable why these movements tend to exhibit better timekeeping performance it’s a shame Seiko has seemed to lose their way putting enough attention into better regulation of the more mid tier stuff like the 6R15, 6R35, and related movements. I don’t believe this has been lost on Seiko’s fan base and especially the competition. Why would anyone put a thousand on more into a watch running perennially slow or always 10 plus seconds fast when there’s some good alternatives. After all, isn’t the timekeeping quality important too? Thanks for this great review!

Did you measure the dial diameter? Thank you.

How + 10 is inaccurate? It is accuret. Please explain, thanks i am planing to buy 1 in few years

are the markers applied or stamped?

Holy shit that’s an insane movement

Nice Steeldive!

Their flagship Tunas have this movement which is kinda scary with the monocoque cases which means if you brought it back to your watch maker to have it regulated, they would need to send it to Seiko to have it opened from the front.

My 8L35 is +10s a day. I used to have some cheaper turtles all within COSC.

So. Is it an accurate movement?, I got confused, I wasn't sure if you were trying to say it was accurate or 6 secs too fast.

Why is there two gaskets (theres another one inside besides the movement)?

My SBDX014 Emperor Tuna has been super accurate

I just got my first 6R watch, now I have to get this? ;)

Hi Bruce, can you do a review on the SPB151J1 ?

Is that watch shockproof or shock resistant?

Bruce which is the cheapest Seiko Model with 8L35 movement❓🙏🏻

I like the new MM300 more

Dear Bruce, Please make your usual comprehensive review for the Full Crown Specifications, dial colors, Sapphire Crystal, Diver Certification, stainless steel bracelets OEM from Seiko, price and availability. Many Thanks & Best Regards.

Seiko always underestimated their accuracy. Probably due to mass production. My 6R15 running at +4/-2 spd. And there're days I get +1/-1 spd.

Question - If Seiko movement has so superior time keeping performance. Why their movement not Chronometer Certified ?

And a slab of metal covers that glorious machinery.....

Nice watch. First!

Fun fact about 8L35 movement; it had a magic lever! The rotor winds the movement in either direction! (:

Link doesn't work

You didn't tell us, does it have an instant date jump?

I don't really understand Sieko, why they concealing the movement behind the solid case back?, as for the accuracy, when it's new this movement is very accurate, but the big question is for how long? if the movement does not have any feature for keeping that accuracy the accuracy will dropped down dramatically.

Bruce did you sell your Marine Master with your daughter’s birth year/month in order to purchase this reissue? Cheers

8l35b surely has a good decoration than 8l35a, make it somewhat on par (a bit under due to lack of color, but this is acceptable) with same price range open caseback Swiss. Bravo for Seiko for this. But accuracy is still terrible then. Someone can say “oh my watch is accurate few secs only” but it is not warranted to do that. Maybe others are not accurate, or maybe that watch someday will have terrible accuracy by some factors. Still don’t understand why Seiko left it like that why they can regulate it. Compared to any swiss at that price point, it is a shame.

I guess you were lucky, my SLA017 is at +7 Seconds per day.

This watch is assembled in Grand Seiko facility, anyone who thinks Seiko would release this watch with un-adjusted non-decorated movement doesn't know shit.

Hello what do you wear on your wrist ...? Please do wristwatch check :-)

I have/had five 8L35s. None is in the acceptable range for the price point. All mine are in 9 - 14 s/d. But I have admit all of them have very small deviation in all 6 positions. In my opinion, Seiko is just too lazy to regulate their movements, which is unacceptable providing they want to charge Swiss level price, Or it just me being so unlucky.

My sla051 is 10-15 sec fast a day Its newish, i hope it settles in a bit, but the aesthetics of the watch make up it. There is no other option for this watch

I think your daughter was calling for you, haha 5 😎

Thanks for the review. Still I would not be so much optimistic as to the budget Seiko wathes. If you attentively trace the second arrow of the watch on this macro video - you will definetly notice two things: dust on it and its harshly cut profile. The markers of the watch is far from being perfect as well. It is not a suprize for me that Japenese guys are very economic in materials and in their budget watches they used metal plated hands made of cheap plastic)). The shining of the movement done by lazer as well does not mean that we see Geneva straps. I wish Japenese were magicians... but they are not. At any rate in this class. So... we are are speaking about cheap budget watch. Overestimated one.

Mine 8L35 is +14s/day.

Best bang for the buck in the watch world my opinion of course. Hopefully the naysayers will now shut up

I wish we could see it in positions other than default....

Such movement should be in Skx

How could this cost as much as a GS !?

You let the Japanese air out!