Seiko Monster 2 Review

Seiko improved the version one of its famous and very popular dive watch named Monster. There are some core changes but in general the Seiko Monster 2 is very similar to its predecessor.

The Case

Seiko Monster II has round shaped case made of stainless steel. It’s nice designed and although it’s little bulky it looks really nice. The backcase is screw-down, made of stainless steel and has the Tsunami logo, characteristic we can fin on other Seiko dive watches. Monster’s bezel is one of the best in watches world, uni-directional with clear 60 clicks, made also of stainless steel. It contains minute markers painted in black color.

The glass of Seiko Monster II is slightly curved, coated with anti-reflective layer and made of Hardlex, Seiko’s patented material. By the words of the company Hardlex is not so hard and scratch-resistant as sapphire is, but it’s more resistant to direct impacts.

The model has only one crown located at very practical place – between positions of 3h and 4h. This way the crown will never bother your wrist. It is screwdown and made of stainless steel.


The Dial

Depending on the version the dial can be in black, orange or “sunset” color. It is clear and without superfluous details. Shaped in form of a monster’s teeth, large and coated with luminescent material, hour markers are really impressive.

Like markers, the hands are also luminescent, large and shaped as arrows. They are very readable and their glowing in the night is very intensive, maybe the brightest we’ve ever seen. It can take the whole night without any problem and even longer.

This watch has a feature that many expensive watches don’t have, displaying both date and day. A reason more to love this “pretty monster”.

Seiko Monster 2 Movement

Seiko improved the mechanism for this model. The previous version has the mechanism 4R36 while now the manufacturer uses 7S26.

4R36 vs 7S26 mechanism

Basically, the core of this new mechanism is the same as the previous one, except it has now two additional features – “hacking” and winding without puling the crown out.

The “hacking” means that the second hand stops moving when the crown is pulled put. Maybe this is not something you’ll be impressed about, but winding the watch when the crown is not pulled out is very useful and I’m glad of that.



Many more expensive watches don’t have so quality bracelet. It’s made of stainless steel with full parts that makes it a little bit heavier but you’ll adopt after a couple of days of wearing the watch. It has folding clasp with safe lock together with a wet-suite extension.

Seiko Monster 2 Versions

  • SRP307 – black dial, gray dial; gray bracelet – Black Monster
  • SRP309 – orange dial, gray case; gray bracelet – Orange Monster
  • SRP311 – sunset color dial; black case; black bracelet
  • SRP313 – black dial (hour markers and hands with red margin); gray case, black rubber strap – Monster Vampire
  • SRP315 – orange/black dial; gray case; black bezel; black rubber strap
  • SRP455 – blue dial; gray case, blue bezel; blue strap – Blue Monster



With the price between $200.00 and $300.00 Seiko Monster II watch is available to everyone. At the link below you’ll be able to see more information and technical details from a seller, together with ratings from people already have this watch.

Click Here to Buy and See Pricing, Ratings, and Reviews on


Seiko Monster II is a great dive watch, not so expensive and provide great price-quality ratio. You need to have it in your collection!

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