Seiko vs Seiko “mm200 vs mm300” 

Thank you Rob, I have been wondering about the differences between these two. Both are awesome watches. Thank you so much for this video :)

Can't think you enough for this video comparison Rob!! Very helpful! Thanks!!

Very helpful. I like the 89% analogy. Very helpful to understand when you are thinking about price and value

Great comparison review. That MM300 is a beauty. It just looks like a true top notch no excuse dive watch.

If the MM300 scores 100, the MM200 scores a solid 88. Considering the 300 is almost 4 x the $, the 200 is good buying. I own one 300 and five 200s if that tells you anything other than I have a problem with spending.

Rob, great video, let me tell you, because of you and Bruce I bought the SBDC063 and I am so happy for that, this is one of my best watches in my collection, congrats on your great work.

I do! Great comparison. Well done. Thanks for bring us all this good info.

Thank you for this video. I guess these are good problems to have but I own both atm and can't decide if I should sell the mm200 or keep it. Like you said, it wears a little better than the mm300 and for me personaly it has a better looking bracelet. It is the only thing making me keep it right now.

Awesome side by side comparison Rob! Thank you.

Very good comparison Rob. I have the SBDX017. The last of the true Marinemasters. I love this watch and prefer the bezel insert to the new ceramic version. I had the SBDC053 and sold it because it wore big and I just couldn’t warm to the handset.

Great reference video , for all Seiko lovers. Thank you Rob

I have the 200, literally have not worn any of my other watches since.. almost 6 months now. Love it.

Great comparison. I have tried them both and beside the price it's the thickness of the watches that made me choose for the MM200. It just wears must better on my smaller wrist. And my 6r15 is below +4s/day ! What's not to like about it. And if I was willing to go above 2.000 eur for a diver I would stretch it to get an Omega SMP 300 (the new one which is 42mm and the master coaxial chronometer movement).

I read it. But if I need the detail I will just watch vid again. Or look it up myself. Good video. MM2 IMO a great choice.

I ordered the Seiko Blue Ocean Dial MM300 SLA023J1 : ) In a few days i will have it! I like the depth that the dial has, and the blue dial makes it even more gorgeous! All watches that have shallow dials are in my eyes lifelessly boring to look at in comparison! I had it for 21 days now, and I enjoy the watch, it's the only watch I wear!

I do read the stats....👍nice video, nice watches, nice everything. Hopefully they going to be on the Sunday sale!

Fantastic review. Exactly what us Seikoholics need,!

Excellent review as always. My experience (own one) and my thoughts on the MM300 are: It is superior in every aspect, it follows the lineage of the 6159, wearing excitement, built like a tank so no need to worry about the elements of nature. It is simply a showstopper. Considering all the above it is a value for money compared to other Swiss brands.

I have the previous edition, with the non-sapphire crystal and painted bezel insert. I love it. I do want to jump up to the blue MM300 early next year.

@Rob I look in the space above to see model numbers you mentioned. You dont need to write anymore than the model numbers you showed in the vid. "Yeah I said I was gonna put some stats down here, but I didn’t. Instead I just wrote this so you would read it and at least know I did something down here. Does anyone even read any of this stuff anyway? "

Have had both and the SLA021 is still in my watch box. The SBDC061 is a great buy, even when just comparing these two. The SLA021, for me, is just a step up in just about every way. Better bezel action, better crystal, better bezel insert, better dial and handset, finishing seems a touch better, I like the adjustable clasp (I enjoyed the 061 bracelet too), the cool factor of the monobloc case, and that wonderful 8L35B movement. I can understand a lot of people opting for the 061 and it's probably the smarter buy, but the 021 is just special.

Maaan was really looking forward to the specs & links in the description! Hahha gottme

Great review! I am curious about the difference between the mm300 and the SBGA029 spring drive.

Have a 300 and it’s one of the most iconic seiko divers hands down but as you pointed out it is beefy and not the best everyday day recently bought a 200 for that purpose I also didn’t like the handset either so I bought some marine master hands to put on it problem solved! A slower beat movement theoretically means less wear and tear also a plus for an every day driver, although I rarely wear the same one twice in a week these retro inspired seikos have been dominating my wrist I paid 4 times as much for my mm300 but after seeing this 60 series it’s not 4 times as nice either way you can’t go wrong with any seiko really Especially these upper tier divers best fully in house diver IMO!

Great comparison. Thank you.

Greatly prefer the 300. The thickness is iconic, while the smaller dial really channels its 'inner retro'. Almost got the 200 to go with my Marinemaster, but, the dial was just too damn wide. It's a nice watch, though, nevertheless. I chose the SBDC153 instead, but, found that that is also a little too "OH, LOOK AT ME!!" size-wise, so, flipped it.

Yup, always read on the description box on your videos at least...first thing I do actually haha

Would the MM200 be a good choice for daily wear? with a suit particularly? I have 7.5 inch wrist as well.

MM300: Still the best from Seiko

My like just for the description. Hahaha Good one Rob!

Does a Baby Marinemaster 200 Crafter Blue (CB13) strap fit the MM300? Both are 20mm lug width, but are the lugs equally long and are their straps interchangeable? Thanks

I do read the descriptions mostly for model numbers and links (great place for affiliate links or any codes). Thanks!

Does the MM200 have a true 3 link bracelet or is it one link that looks like a 3 piece? The height / bracelet of the 300 turn me off, as does the spotty record of the 8L35 and servicing I look in the drop down box for extra info, links etc.

Ha ha, I was going to ask specifically for this comparison. I sometimes read the description, depends.

Nice ghost text in the description. I apparently read them!

Rob you think the Sarx55 style bracelet would fit on the MM300?

great review (I know, I'm late :) ). I like the MM200 better. The bracelet is the same, the diashield is the same, its just really the movement that you are paying for in the MM300, but you pay for that also with the excess thickness and weight. My order is in now for the MM200 as its a mature, rather then a new watch! - I'm just slow ...

Gosh, that is a beauty!

I almost always read the comments, even the long ones. Anyway, what are the crystal measurements for those two MMs? You're the master of the calipers RR!

The Marine Master is beguiling, but far beyond my affordability unfortunately.

Thickness of the MM300 would probably be a deal breaker for me. Both stunning though and yes I always read the description :)

Bobby what's your favourite dive watch that beats the SBDC061/MM200 around that price range?

I almost always read the comments, disappointed that I didn't see the weight listed in comment... nah not really. Nice video.

MM300 has been on my wish list for 10 years never pullled the trigger yet but now they have the blue one and its not a limited edition I plan on adding it in the next few months.

can you please do a review on sbdc039/transocean?

Just ordered the 200 today, comes in tomorrow. I chose the mm200 because it reminds me of my Omega Planet Ocean (42mm, 2500c) which I sold and miss very much. I hope it fills the same role the Omega did. The MM300 is a beast, but I was looking for a more affordable diver to compliment my higher end watches (not afraid to wreck this one, I'm sure thats almost impossible). Hopefully it won't disappoint. I have a not so good track record with Seiko's (accuracy wise).

Awesome comparison.

Do you just buy and immediately resell a lot? What happened to the PADI MM200?

That MM300 is a stunner! Man if it were 39-40mm case with 13mm thick and down, I'd buy it in a heartbeat. What a cracking watch!

Thanks Rob, great video. MM200 looks better to me. 300 is nice, but dial looks too small. Just me. Thanks again RR.

First again, watching for these way too much!!

Lol.. I am doing exactly as what your mentioned, selling couple of watches to get mm300 !

I’ve modded my 063 with mm300 hands, now it looks way better, like it more than my 023. I wish it will be updated with the new 6r35 in the latest sumo in the near future. It makes no sense now to pay more for less.

Love, love , love the MM300! a bit thick but hey I own a Black Bay and that doesn’t bother me. I want one Dammit!😂

I absolutely love my Seiko SLA021 marinemaster. I like it even more than my Rolex Submariner (ceramic no-date). I just like the hands and the deep/tall bezel. I dislike the SBDC061 because the handset does NOT match the indices... it's a dull, matte grey color while the indices look like polished metal.

Rob, can you recommend me where can I buy an original seiko brazalete for the sbdc063, thanks in advance

I had the sbdc053 black previous version to the "mm200" lovely watch and i bought it instead of the sbdc063 at the time. Had it for nearly a year and loved it but in the back of my mind was the mm300 and has been for a couple of years but just couldn't bring myself to spend that on (a seiko!) Or so I thought!!! I now have the sla021, as soon as I saw this new version released and in black not green I something just clicked, yes it was a risk for me as no AD for this watch so it was boughh online but It came and just wow!!! A grail watch for sure that has written off many of the other so called luxury brands of choice in my mind. Tried a black bay, had a seamaster (one before latest) and believe me the seiko is in my humble opinion better, and although I love seiko I'm not a fan boy i just like what i like. So it was a big risk, but It paid off. Just awesome and pics/videos just dont do justice at all even side by side to another mid/high seiko like above. Well done randomrob for comparison with this was out 5 months ago would of saved myself some sleepless nights haha. Thanks and regards from UK.

HEY!! How come there are no specs in the drop down beneath the video???

What’s your favourite Rob?

I always read the descriptions to look for any links

plan to get the mm200 but then the green willard came out and caught my attention... ill get the mm200 afterward.

Please make a list of affordable 28800 bph watches, it would b great

One difference between getting one or the other is that the MM300 is best for those who specifically like its own personality that it has apart from the original 6159. The "MM200" is more for fans of the 6159 who can't or won't pay for that ungodly priced limited edition re-issue. Personally, I like both for the different reasons, so, it's not really a competition for me.

Great video Rob. How would you compare the MM200 against a nice Turtle model?

The 300 is a glorious chunck!

I think the MM300 is amazing, don’t have one. But looks wise, I just prefer the way the MM200 looks. If someone didn’t tell me all the info about the movements, and prices, I just like the looks of the MM200 better. Not that the MM300 is ugly, just prefer the looks of the MM200.

I personally love love love the SLA019. The 300 is beautiful as well but there is something about the MM200 with the matte dial and the beautiful metallic blue bezel that makes me like that a bit more. The only thing I really like more on the 300 is that cool seconds hand.

Yup, I read that stuff..

I own both the MM300 SLA021 and the MM200 SPB083 "great blue hole". They most definitely can coexist in a collection, because they a have their own unique appearance. I love these watches, just as I do my SPB143 and SPB149. Now talk about similar watches. ;-)

Rob what are your thoughts on the 300m Tuna's vs the 1000m Tuna's?

Hey Rob, where'd you put the gshock clock?

plz do a video on sumo vs mm200

I know you’ve handled both so how would you compare an mm200 with the steinhart titanium 500? 😊

I'd like to add, though, when service time comes, the MM300 needs to go back to the factory, where, with the "MM200", it would actually be much more cost effective, faster and more convenient to just buy a regulated NH35 movement and get your local watchmaker to pop it in, all for $150 or under.

mm 200 vs Mido Ocean Star?

I like the case and bezel of the MM200 better than its big brother but I much prefer the handset of the MM300. If I could swap out that handset I'd get the MM200.

Dear Rob, I believe that Seiko baby marine master 200 m dive watch is by far the best dive watch in its range and also is a very nice dress day to day watch. l hope that Seiko uses a signed crown with more advanced running movement having more power reserve.

I'd take the MM300, especially the older SBDX017 model. The MM300 will be worth more down the road while the MM200 will only depreciate. If you don't like the MM300, sell it and get your money back, you won't be so lucky if you don't like the MM200. Only exception to this I see being is for those with wrists smaller than 7 inches as the size of the MM300 may be a tad too much. I will also say that the deviation in time dial up mentioned by Rob in this video is nowhere near representative of how these watches run. Expect an 8l35 to run near +8 seconds on average and a 6r15 to be closer to +15 with a lot more positional variance.

have u selled sieko divers

Both are beauties. But if it were my money, I'd grab the MM300. I like its look a bit better.

Mm200 or glycine combat sub?

How I can contact you for buying these watches????

If the 200 would come with the MM300 handset and a 6R35 it would be an instant buy

Very good comparison and assessment made dear Rob, yet beneficial at the same time. If you are not a professional diver that you dive frequently then definitely go for the Baby Marine Master at 900 US $, rather than going to the Marine Master Professional at 2800 US $. The only differences are the signed Crown and the Accuracy of time from 0 to 1 Second compared to 5 Seconds per day.

Love the depth and overall look/design of the mm300. To bad at the expense of overall thickness. Great description too! Lol

Would rather take the jump to a grand sieko if I’m spending that.

Nice time graph on that mm300. Mine runs +5.

Sorry Rob, good comparison but sadly it shows that the 300 is never worth 3 times more than the 200.. and it's extremely top heavy in my ownership experience... cheers

I have the MM200 and I'm looking at the 300. I'm not sure if I should pull the trigger.

I am waiting "baby sumo" to come😊

Good comparison and I for one...do read the descriptions 🤷🏼‍♂️😂😂

Save your money and get the MM300 it's a lot nicer. If it feels to top heavy for you put it on a crafter blue strap. It will stop moving around and you will forget about the weight.

Go for the 300M. Should searching is the right way to say it! And from experience…if you desire the 300M don’t settle! It’s hard to call it a beater watch, but once I got mine, I never take it off. If I’d have known that 20 years ago, I’d have just waited and bought one watch for my life. 300M!

SBDC061 FTW!

What is mm200 model number?

Nice watches

I would gut them and put them into an skx mod

seiko looks good on your wrist

I try and read them, and this one I did.

Why is the mm200 called "Marine master". Why are the both watches even compared? They have absolutely no resemblance to each other. Do they?