The Ultimate Seiko Monster Collector's Guide

What Lurks Below: The Ultimate Seiko Monster Collector’s Guide

Posted by Mike Johnson on in Articles

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The Seiko Monster might be one of the most polarizing dive watches ever released.

The love-it or hate-it design has camps firmly entrenched on either side, with dedicated followers declaring their love for the quality and value, while detractors scratch their heads at the aggressive and somewhat ugly overall design.

Both sides have a point – the Seiko Monster is no beauty queen. But with a watch like the Monster, that was never the intent. Just look at the name: “Monster”, it was always destined to scare some people.

The Monster is all about rugged dive capability offered at an exceptional value. Like the Seiko SKX, you can most Monsters for less than $500 – and for that you’re getting a pretty amazing watch: 200 meters of water resistance, a reliable low-maintenance mechanical movement, and an incredibly overbuilt dive watch that can withstand a lot of abuse.

Not to mention, the aggressive design has been known to grow on the unbelievers. I’ve witnessed many a convert spend years hating the Monster before finally giving up and falling in love with what it is: an unabashed tool-watch.

Enjoying 10 years of continuous production, there is no denying that the Monster might be one of Seiko’s most popular modern dive watches. The basic model has evolved over three generations, and Seiko has released dozens of highly collectible special editions and unique colors to satisfy collector’s insatiable appetite for this affordable diver.

Let’s dig in, starting with the various Seiko movements used in this model.

Seiko Monster Movements

Reference Jewels Rate Power Hacking Handwinding Day Date
7S26 21 21,600 bph 40 hours
7S36 23 21,600 bph 40 hours
4R36 24 21,600 bph 41 hours
6R15 23 21,600 bph 50 hours

Seiko Monsters primarily use one of four popular Seiko Movements, the 7S26, the 7S36, the 4R36, and the 6R15. All of these movements are all fairly similar, considering that they share the same basic architecture.

The 7SXX line of movements are Seiko’s popular workhorse movement used in much of their entry-level automatic watches since 1996. The 7S26 and 7S36 are identical movements excluding the addition of two additional jewels on the 7S36, which are purely decorative.

The 4R36 and 6R15 are upgrades on this basic architecture, adding hacking and hand-winding capabilities. The 6R15 is the most desirable movement of this group, owing a 50-hour power reserve to it’s upgraded Spron 510 mainspring (a highly elastic allow developed by Seiko).

None of these movement are known for their fit and finish, however they are incredibly reliable and easy to maintain, due to their relative simplicity and availability of spare parts. Accuracy is typically +/- 25 sec / day, although they can be made more accurate with proper regulation.

Classic Seiko Monsters

First released in basic black and orange, the original Monster set the standard for many of this watches now iconic characteristics: the chunky case, insane glowing lume, a toothy steel ratcheted bezel, and the stubby and short broad-arrow hour hand.

There were many special editions of this watch produced, with some of them being incredibly rare and collectible. See the ‘Limited Edition’ section for more details.

Classic Black Monster

Seiko SKX779
Model:
SKX779
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
7S26
Buy:
---
The original. Black dial and steel bezel available on rubber or bracelet. No longer in production but stock is still available.

Classic Orange Monster

Seiko SKX781
Model:
SKX781
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
7S26
Buy:
$760.40
Orange proved to be an incredibly popular variation on the original Monster. Still in production by Seiko.

Limited Edition Seiko Monsters

Most of the limited edition Monsters from this generation were released in very limited quantities in Thailand. Although a couple of limited editions have unique specs, the majority are basic variations on the color and materials of the base model (1st and 2nd gen) Monsters.

Why Thailand? Most likely because Seiko has a manufacturing and design facility there and early iterations of this watch enjoyed robust sales in the Asian markets. Or maybe Thai people just like crazy looking watches.

Snow Monster

Seiko SKZ331
Model:
SKZ331
Size:
43mm
Depth:
200M
Rarity:
Rare (2555 units)
Movement:
7S36
Find:
Ebay
Steel bezel with blue markings, white and blue dial with silver markings, white and black hands and blue seconds hand. 'Limited Edition' printed on dial.

LE Blue Monster

Seiko SKZ213
Model:
SKZ213
Size:
43mm
Depth:
200M
Rarity:
Rare (1800 units)
Movement:
7S36
Find:
Ebay
Steel bezel with red and black markings, blue dial with white hands and markers.

LE Red Monster

Seiko SKZ243
Model:
SKZ243
Size:
43mm
Depth:
200M
Rarity:
Rare (1313 units)
Movement:
7S36
Find:
Ebay
Steel bezel with red and black markings, red dial, and white hands with orange seconds hand. 'Limited Edition' printed on dial.

LE Yellow Monster

Seiko SKZ203
Model:
SKZ203
Size:
43mm
Depth:
200M
Rarity:
Very Rare (300 units)
Movement:
7S36
Find:
Ebay
Very rare at only 300 pieces produced worldwide. Steel bezel with black markings, yellow dial with white hands and red seconds hand. 'Limited Edition' printed on dial.

LE Green Monster

Seiko SKZ277
Model:
SKZ277
Size:
43mm
Depth:
200M
Rarity:
Rare (1818 units)
Movement:
7S36
Find:
Ebay
Chrome bezel, lime green dial, yellow seconds hand, white hands. 'Limited Edition' printed on dial.

Super Blue Monster

Seiko SRP455
Model:
SRP455
Size:
45mm
Depth:
200M
Rarity:
Limited
Movement:
4R36
Find:
Ebay
100th anniversary edition. Chrome blue bezel with white markings, blue sunburst dial, gold hands and markings, gold crown.

Zamba Monster

Seiko SRP319
Model:
SRP319
Size:
43mm
Depth:
200M
Rarity:
Limited (2112 units)
Movement:
4R36
Find:
Ebay
Sapphire crystal, black bezel with black and red markings, red, purple and green markings. Red hands. 'Limited Edition' printed on dial.

Moon Monster LE

Seiko SRP457
Model:
SRP457
Size:
45mm
Depth:
200M
Rarity:
Limited (1313 units)
Movement:
4R36
Find:
Ebay
Seiko Monster 10th anniversary edition. Black case and bezel with yellow markings. Crescent moon design on dial.

Sun Monster LE

Seiko SRP459
Model:
SRP459
Size:
45mm
Depth:
200M
Rarity:
Limited (2323 units)
Movement:
4R36
Find:
Ebay
Seiko Monster 10th anniversary edition designed by Akira Sakairi.

Royal Blue LE Monster

Seiko SRP657
Model:
SRP657
Size:
43mm
Depth:
200M
Rarity:
Limited (1000 units)
Movement:
4R36
Find:
Ebay
Basically an inverted 'Snow Monster'

Prince Monster

Seiko SNM039
Model:
SNM039
Size:
48mm
Depth:
200M
Rarity:
Limited (1666 units)
Movement:
7S35
Find:
Ebay
Limited edition 'Land Monster' with rose gold case accents. Much larger than the standard Monster.

2nd Generation Seiko Monsters

In what may have been a move to take the Monster “theme” a bit too far, the second generation dial was updated to look like the gaping maw of a lamprey attached to a poor lake trout.

Still, the new model proved immensely popular and the upgrades at movement provided the watch with much needed hacking and hand-winding capabilities.

2nd-Gen Black Monster

Seiko SRP307
Model:
SRP307
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
$425.00
Black dial, white markers and hands, and red-tipped seconds hand.

2nd-Gen Orange Monster

Seiko SRP309
Model:
SRP309
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
$399.00
Orange dial, white markers and hands, and white tipped seconds hand.

2nd-Gen Black/Red Monster

Seiko SRP313
Model:
SRP313
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
$185.00
Black dial, red and white markers and hands.

2nd-Gen Black/Orange Monster

Seiko SRP311
Model:
SRP311
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
Black bezel with orange markings, black/orange sunburst dial, and black and white hands and markers.

2nd-Gen Orange/Black Monster

Seiko SRP315
Model:
SRP315
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
Black bezel with white markings, orange and black dial, and black and white hands and markers.

Black Ion Monster

Seiko SRP583
Model:
SRP583
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
4R36
Buy:
Black bezel with white markings, black bracelet, gold markings, hands and crown.

Sea Monster

Seiko SRP581
Model:
SRP581
Size:
43mm
Depth:
200M
Rarity:
Limited
Movement:
4R36
Buy:
$218.90
Blue bezel with white markings, black dial with white and blue hands.

3rd Generation Seiko Monsters

From a strict design perspective, the third iteration of the Seiko Monster is by far the most balanced. Gone are the shark-tooth indices of the second generation, replaced with the trapezoidal markers reminiscent of the first release. The day feature was dropped, and a Rolex-esque magnification window was added to the crystal. The 3rd-gen Monster also contains the premium 6R15 movement, a module otherwise used in the mid-range SARB line (eg. The “Alpinist”, and the “Cocktail Time”).

Unfortunately the 3rd generation models are not as easy to acquire in the U.S. market yet, you’ll have to buy from a global/Japanese marketplace like Ebay, Rakuten or ShoppinginJapan.

Additionally, these models have moved into the midrange market in terms of price (~$500) and no longer have the value that made the original models so attractive to entry level buyers. Still, they are higher quality than the originals and well worth the price.

3rd-Gen Black Monster

Seiko SBDC025
Model:
SBDC025
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
6R15
Find:
Ebay
Steel bezel, black dial, white markings and hands.

3rd-Gen Orange Monster

Seiko SBDC023
Model:
SBDC023
Size:
43mm
Depth:
200M
Rarity:
Common
Movement:
6R15
Find:
Ebay
Steel bezel, orange dial, black and white markings and hands.

Seiko Night Monsters

The Night Monsters are blacked-out variations of the original Monster design produced for the Japanese domestic market (JDM), featuring blacked-out PVD bezels, cases and bracelets. Originally intended to be limited editions, these watches enjoyed an extended production run and are relatively easy to acquire online.

Night Monster

Seiko SZEN002
Model:
SZEN002
Size:
43mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
7S36
Buy:
$431.51
Black case, black bezel, black bracelet, black dial.

White Night Monster

Seiko SZEN006
Model:
SZEN006
Size:
43mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
7S36
Buy:
$447.95
Black case, black bezel, black bracelet, white dial with white hands and red second hand.

Purple Night Monster

Seiko SZEN007
Model:
SZEN007
Size:
43mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
7S36
Buy:
$463.78
Black case, black bezel, black bracelet, purple dial with white hands and purple second hand.

Orange Night Monster

Seiko SZEN001
Model:
SZEN001
Size:
43mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
7S36
Find:
Ebay
Black case, black bezel, black bracelet, orange dial with white and black hands.

Seiko Land Monsters

The Land Monsters are like a strange love-child between a Seiko Alpinist and the original Monster. Although it mostly looks like a standard Monster, it also features a rotating directional bezel controlled by the crown at 2 o’clock. Even though it’s focused on trekking on land, it maintains it’s 200M WR and timing bezel, making it a usable dive watch as well.

Black Land Monster

Seiko SNM035
Model:
SNM035
Size:
43mm
Depth:
200M
Rarity:
Limited
Movement:
7S36
Find:
Ebay
Steel bezel with orange and black markings, steel bracelet, black dial with orange seconds-hand.

Orange Land Monster

Seiko SNM037
Model:
SNM037
Size:
43mm
Depth:
200M
Rarity:
Limited
Movement:
7S36
Find:
Ebay
Steel case with rubber bracelet, black bezel with white and orange markings, orange dial with black and white hands.

Seiko Baby Monsters

The so-called “Baby Monsters” (designated with SNZF) share the iconic styling of the original Monsters but lack some of the real dive-watch capabilities of their more serious siblings. The dial sports the “Seiko 5 Sports” logo, and the lack of screw-down crown downgrades the depth rating to only 100 meters.

These were intended more for the fashion market, and can be had for closer to $100. They still contain automatic movements though, and in that regard they still represent a great value for a mechanical watch.

White Baby Monster

Seiko SNZF45
Model:
SNZF45
Size:
43mm
Depth:
100M
Rarity:
Common
Movement:
7S36
Find:
Ebay
Steel bezel with black markings, white dial with black and white hands.

Black/Red Baby Monster

Seiko SNZF47
Model:
SNZF47
Size:
43mm
Depth:
100M
Rarity:
Common
Movement:
7S36
Buy:
$175.00
Steel bezel with red and black markings, black dial with white hands and red seconds-hand.

Orange Baby Monster

Seiko SNZF49
Model:
SNZF49
Size:
43mm
Depth:
100M
Rarity:
Common
Movement:
7S36
Buy:
---
Steel bezel with orange and black markings

Black Baby Monster

Seiko SNZF51
Model:
SNZF51
Size:
43mm
Depth:
100M
Rarity:
Common
Movement:
7S36
Buy:
$189.97
Steel bezel with orange and black markings, orange and black dial with white and black hands.

Night Baby Monster

Seiko SNZF53
Model:
SNZF53
Size:
43mm
Depth:
100M
Rarity:
Common
Movement:
7S36
Buy:
$183.00
Black bezel with red and white markings, black dial with white markings and red seconds-hand.

Seiko Trek Monsters

Another JDM-only version of the Monster released in 2009, the Seiko “Trek Monster” is the land-lover’s companion to this iconic dive-watch. Powered by the 6R15 like the 3rd generation Monsters, the Trek Monsters feature a navigational bezel in place of the standard diving bezel and more of a field watch styling for the dial and hands.

These models are slightly smaller at 40mm, but still boast a 200M water resistance just in case you can’t keep out of the water.

Although some people dispute the fact that these models should be classified with other “Monsters”, I believe they share enough of the design DNA and components to include them in this reference guide.

Trek Monster

Seiko SARB047
Model:
SARB047
Size:
40mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
6R15
Find:
Ebay
Basic black 'Trek Monster'. Black bezel with white markings, black dial with white hands and markings.

Gold Trek Monster

Seiko SARB048
Model:
SARB048
Size:
40mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
6R15
Find:
Ebay
Standard 'Trek Monster' with a gold case, black crown, and gilded markings.

Green Night Trek Monster

Seiko SARB049
Model:
SARB049
Size:
40mm
Depth:
200M
Rarity:
Common (JDM)
Movement:
6R15
Find:
Ebay
Standard 'Trek Monster' with green hands and markings.

Live Pricing Table

We’re able to automatically pull the lowest available price For the Monster models that can be readily obtained on Amazon. See our table below for a quick price comparison of the common models.

Prices are updated every 60 minutes.

Thumbnail Type Model Color Price (New)
SKX779 Classic Monster SKX779 Black
SKX781 Classic Monster SKX781 Orange $760.40
SRP307 2nd Generation SRP307 Black $425.00
SRP309 2nd Generation SRP309 Orange $399.00
SRP311 2nd Generation SRP311 Orange Starburst $185.00
SRP313 2nd Generation SRP313 Red
SRP315 2nd Generation SRP315 Orange/Black
SRP583 2nd Generation SRP583 Black Ion
SBDC023 3rd Generation SBDC023 Black $535.67
SNZF47 Baby Monster SNZF47 Black/Red
SNZF49 Baby Monster SNZF49 Orange
SNZF53 Baby Monster SNZF53 Night Black $183.00
SRP581 Limited Edition SRP581 Blue Sunburst $218.90
SZEN002 Night Monster SZEN002 Black $431.51
SZEN006 Night Monster SZEN006 White $447.95
SZEN007 Night Monster SZEN007 Purple

Please let us know if we’ve missed any of your favorite Monster models in the comments below!


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About the Author
Mike Johnson

Mike Johnson

Mike Johnson is the managing editor and primary contributor to 60clicks.com. Born into a military family as the son of US Navy pilot, Mike spent many of his formative years studying Computer Science and User Experience Design. When not obsessing over watches, Mike spends time hiking, traveling, and spending time with his family in Phoenix, Arizona.


Comments 6

  1. Steve Joyce

    Thanks for this guide. I have a couple and am looking for more as I can find them at good prices. The gen 2 “Dracula” is my next target and then the one of the yen 3s. The numbers of variations is crazy! Do you think that the so called baby tunas which seem to be monsters with shrouds should be considered variations? I found your post at watchuseek btw. I think that I might be developing a monster problem. Anyhow thanks.

  2. Mike Johnson Post
    Author
    Mike Johnson

    Steve, definitely sounds like you are developing a problem – best to seek help! 😉

    I did consider the “Baby Tunas” for the guide, but honestly they are such a weird hybrid between the Tunas and the Monsters they are difficult to classify. For me, the shrouded case makes it more Tuna than Monster, but I’m sure you could argue it either way.

  3. Kristoffer Thomsen

    Hi Mike,

    Thanks for this very clear and informative overlook of the magnificent monsters! 🙂
    Just wanna offer a tiny correction: I don’t think the Blue Monster reads “Limited Edition” on the dial? (on mine it does not, anyways, and the pictures I’ve seen of other Blue monster LE didnt either…
    Cheers! 🙂

    – Kristoffer

    1. Mike Johnson Post
      Author
  4. Mark Lewis

    This is an excellent article. Very informative and well laid out with the perfect amount of information. Well done Mike. I been looking to purchase my first Monster in the UK and could not find all the information I needed to make my final decision until I came across your article. It helped me to make my decision to purchase the 2nd Gen SRP313J1 “Dracula” which I should have in my possession on Monday 16th Jan 2017 🙂

    1. Mike Johnson Post
      Author

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