Had both. Sold the Rolex and my only watch is an SBDX017 now. The MM300 has its own history and lineage that goes all the way back to the same time frame when Rolex was working with the sub. Seiko was doing this in Japan as well. Not many other brands can say that. The MM300 is a true legend with its own story with no Rolex influence.

I used to own Rolex, Oris, Omega duve watches but over the years have gone back to Seiko, I just love the uniqueness of the cases and design as well as the 'yes, dear its a new watch but its only a Seiko'😂😉

Value for money, Seiko wins. Lume, Seiko wins. Diving functionality (helium resistance), Seiko wins. Legibility (e.g., AR coating), Seiko wins. Style/Case uniqueness, Seiko wins Case finishing/contouring complexity, Seiko wins Strap changeability (i.e., pin holes), Seiko wins If you want a real tool watch, the smart purchase would be the Seiko...

Two amazing watches but I’d choose the Seiko. More interesting look and the lume is on another level.

I own the SBDC033 Sumo and to me the ultimate watch to own would be the Marine Master 300 . Even if money wasn’t an issue I still think I’d buy the Marine Master. Not to say I wouldn’t want both the Rolex submariner and the Marine Master in my collection but I’d definitely purchase the Marine Master first because that watch is to me the ultimate grail watch for me .

Very helpful as I ponder a MM300. Rolex out of my league. MM300 a stretch but good goal!

Love my new sla021! Diashield, zaratsu, beautiful dial for under $2k for me!

Picking up my first SLA today. Its a021.Straight retail. They ordered it,but had a green MM300 and a red Seigaiha MM300 on site,and those are what got my attention. I was merely walking past and saw out the corner of my eye those 2 MM300 amongst those Turtles,Willards and Seiko 5s. And that's why I stopped in.

Best of rolex vs best of seiko , my 2 favourite brands love em both!

Got both. Rolex doesn’t even come close to the marine master

I'll be honest, I keep going back to a Seiko dive watch. Like I compare my 2017 JDM SPDC053 reissue to pretty much everything, and prefer it to 99% of dive watches at any price! Once you get into the 1000$ or so + range with Seiko, it's a different beast from your run-of-the-mill Samurais and Turtles, like even mine has a bit of Zaratsu polishing on it. Completely changed my opinion of the brand. That MM300 is next level, unfortunately I have tiny wrists.

I have a MM300 sbdx, save money for years and from when I have it it does not came of my wrist... imho way more intresting then any Rolex.

I love my no date 40 mm no date sub . I agree prices will go north . Get my 41mm date tomorrow so looking forward to comparing them . AD got it in 3 weeks for me so I’m a happy guy ..

Couple of legends right there!

A bit late to this party. Own a sla039, and 059. No rolex yet . Maybe someday. The marinemaster 300 is a unique watch. Top loading monoblock case. Saturation diver. Working watch if you want. Wears a bit different. Doent seem wide , only thick. Less wrist presence than my samurai, or turtle. The 039 tends to be a little top heavy because of being on a band. Stunning gs quality. The 059 on the bracelet feels a little more balanced because of the weight of the bracelet. The dial is beyond stunning. Think people really love , or meh.... The mm300😂

Rolex is overly advertised Seiko is overly engineered, you do that math.

The Rolex is tiny. I prefer the MM 300.

Interesting take. I Would like to see a similar seiko or GS in the same price range as a sub for a more apples to apples comparison.in my opinion seiko passed Rolex and every other brand in terms of precision and accuracy and robustness as soon as they released spring drive. The case finishing is on par with Patek I have zaratsu watches and they are impressive and stunning the camera just can’t translate it, it’s fantastic considering it’s price hell if I was a professional diver and I had to pick something that isn’t quartz and has the best lume on the planet and has a full titanium option I’m going spring drive all day if My life depends on it m. With the games you have to play with Rolex just to get a watch at retail is off putting especially when you have to pay a ridiculous amount on the grey market knowing you can get a overall better watch at Half the price it’s a no brainer in terms of utility. Rolex makes boring tweaks every year (which I understand if it’s not broke…) they just aren’t as innovative anymore they’ve become a status symbol rather than to be the tool it originally was designed to be….enter Tudor lol on paper the only category Rolex beats it is in name recognition it has better lume, accuracy lightweight materials and has a great power reserve or power reserve meter the crown is oversized along with the bezel making it easier to grip underwater also the use of the more secure pin and caller vs screws although it may sacrifice aesthetically it’s form over function but consider it against a GS diver and or a LX which you could by two for the price of the sub that would be interesting

Ones a Ferrari and the others a Nissan GTR. Both look gorgeous and are extremely well engineered so if money was no object then I'd take the Rolex/Ferrari but since money is a factor then my 96 Toyota hilux/citizen aqualand is my pride and joy. We've shared too many experiences to depart each other

I owned both but will buy the Seiko again for wearing

I much prefer the seiko

The Seiko any day.

Sold my sub years ago...after a while, at least for me, the sub look just gets old and worn out. The MM300 looks different from top to bottom...monobloc case, a clasp that is workable to adjust while under water, it is just more interesting...

The Rolex oyster steel is softer than the seiko steel. This means that scratches easier and show scratches more. Maybe polishing is easier on the oyster steel but can’t confirm it

2 classics there for sure.

I live in the west side of Puerto Rico I wear Seiko I'm not going to die for a Rolex

Nice and honest comparison. Like both brands BUT Seiko is 100% in-house ALL their stuff instead of Rolex from what I know. Anyway great pieces.

Beauty lies in the hand of the beholder. That being said, what makes SEIKO MM300 superior than ROLEX SUBMARINER you will have to analogously think of the two icons in terms a JAPANESE MADE TOYOTA LANDCRUISER vs a HAND ASSEMBLED Australian MERCEDES G WAGON. While the TOYOTA LANDCRUISER is big and beefy it ages really well. The G wagon however, does not. "Wabi-sabi nurtures all that is authentic by acknowledging three simple realities: nothing lasts, nothing is finished, and nothing is perfect." "Wabi' came to connote rustic simplicity, freshness or quietness, and can be applied to both natural and human-made objects as an expression of understated elegance. "

I take the marinemaster all day over that rolex ✅️

Lovely sub love my 114060 Seiko lovely watch just picked up the tuna sbbn015 new in box still stickerd 2010 on the card 😍👌

I think the clasp of seiko is much better. Seiko comes with Superluminova C3, better too. Seiko have his own movement.. rolex no.

I have a Rolex Sea dweller that I am selling because it does nothing for me. Looking to get the Marinemaster soon

great video and thank you for the lume shot. Just bought a Seiko.

I put a Strapcode Hexad on my MM, wears just as nice as my Sub LV

One lives in a safe or under a cuff, the other one likely to get wet

i got my 114060 from my AD just a couple weeks before it was discontinued. it is definitely a keeper. everyone compares their watches against the sub,........because it's the benchmark for all the others

Kind of difficult to compare them. One is a tool watch and the other is jewelry.

Actually, the gateway drug for me was an SKX007...lol.

Sorry I choose the seiko myzelf, the Rolex may be good but what is disappointing to me is the everyday model off the rolex

Bracelet and clasp : Rolex by a mile. All the rest, both are fantastic.

Are you sure the marine master has a titanium bracelet? It says stainless steel stamped on mine. And I also have a submariner date as well and think the marine master is definitely a good value for what you're getting.

The clasp is Stainless Steel and is engraved as so.

Is it worth buying mm300 without marinemaster and unadjusted movement?what’s the daily accuracy of the watch watch?can the watch fit in small size wrist?any issues problems while using the tool watch?

In every way the Seiko looks better and is built better

Rolex is technically better but I prefer the looks of the Seiko hands down.

I don't believe this MM300 has the "hi beat" movement. The SLA025 does though and uses a similar case but slightly thicker

My wrist is only16mm..but i love the seiko too much! Can the bracelet for the seiko be trim to 16mm to suit my small wrist?

How about weight? Looks like Seiko weights twice as Rolex

do you have a gruen precision alarm 17j 1970.

have you heard of a gruen precision alarm 17j 1970?

SPB143 beats them both!

Great video thank you- however your failing to line the bezel up so many times really tickled me 😄😄😄

would you be able to do a video on just any seiko 6139?

15mm.....it looks like a hockey puck!

That MM300 looks soooooo much better than the craplex

8l35A is decorated. 8L35B is not.

I like how the Seiko Marine Master 300 looks except for the crown at 4 o'clock. Not sure why but it just irritates me with the crown at 4 instead of crown at 3. You can call me old fashioned and traditional guy. I mean I don't see any other Swiss watchmakers do their crowns at 4.

i have a channel about watches.

lol

Movement rolex (cosc). Rolex win Bracelet rolex win Bezel rolex win. Size diameter for me rolex win History rolex win. Symbol status rolex win. But i still prefer seiko. To stay under the radar. I own sla033j1. 6105 8119. Mm200. Rolex 114060. Thanks. Update:- 25/10/2021 Send my seiko (8l35) services they charges arround usd600. Recomend to service for 3 years. Last time i send my rolex for services after 6 year only usd500. Now seiko is more expensive than rolex. Crazy 8l35.