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Seiko Divers Watch Sizes - Watch Case Dimensions

Even if you’re not new in the wristwatch world, it may be hard to remember your Seiko case dimensions from the top of your head or even have it written somewhere close to yourself. The watch size is, as collectors would know, super-important, from more than one reason. Not just so you can pick the right sized watch for your wrist, but also if you want to replace your watch band and especially if you’re into Seiko mods. As we’re talking about premium quality when it comes to Seiko, there shall be no room for mistakes in none of these cases and that’s why we’re compiled this quick watch size guide on the most popular Seiko diver models.

Of course, nowadays, one can learn almost everything yourself, especially simple things like how to change your watch strap. But as time is the most precious thing on Earth, some shortcuts are always of help, especially if you’re a novice. Instead of Googling things like how to measure watch case size and risking not measuring it correctly, whether you’re buying a new watch or just want to replace your watch band, you can simply use our watch size chart below and find the correct info for your model.

Sure, what you’ll have to learn on your own are some other things like, for example, how to remove watch band, how to put on a Nato strap or how to adjust mesh watch band (hint: we have some useful guides too!), but these are all things you’ll learn once and know for the rest of your life. Having the watch case dimensions in your long-term memory, especially if you have more than one watch, may be unnecessary burden. The information compiled here is made to make your job easier so making a bookmark of this page may be your worthy shortcut. That way you’ll instantly know if the watch you want is too big or too small for your wrist or which watch strap size you need to buy to perfectly fit your favorite watch case (astonishing Seiko mods, here we come!). But let’s first define some things so you know how to use information on this page.

 

How to use information on this page

Basically, what you’ll have to do first when you’re buying a watch is to learn how to measure wrist size for watch so you can adjust the watch strap to fit your wrist properly. It isn’t too wise to rely on widely available web-based info about average men’s wrist size (or average wrist size women) as you want your watch strap to keep your precious timepiece securely on your wrist. Aside from that, don’t forget to include the spring bar distance from the table below into the count, as that is basically the length of the watch case lying on the upper side of your wrist. This is less important in case of a strap on bracelets, where you need to take only strap on sizes into account, but it is important to mention, especially if you have wrist larger than average, or a small wrist, that is.

Since other dimensions are pretty straightforward, there is only one that may confuse the novices and in case if there is any of you wondering what is a lug width, here is your answer. The lugs are side extensions of the watch case, often referred as watch horns, that are serving the purpose of securing the strap to the watch case. Naturally, not all lugs are created equal. Most often, watch cases come with 18mm, 19 mm, 20mm, 21mm or 22 mm lug widths. This is important, since, for example 21mm watch strap just won’t fit in 22 mm case, so you’ll have to be on point with this.

So instead of wasting your time to learn how to measure watch size, use the information available below to quickly determine what kind of a watch will fit your wrist and what kind of a watch strap fits your beloved timekeeper. Once you determine your watch case dimensions, you’ll always know what Seiko replacement bracelet you’ll need for your favorite divers. And that means turning your already charming accessory into a shapeshifter that you can take on all your adventures, whether they be diving around Maldives, a basketball game, a fancy dinner or super-important business meeting.

 

Size Guide to Seiko Watches / Measurements Charts

In the tables below, you’ll find the dimensions of popular Seiko watches, mostly from Seiko Prospex series. Whether you need to check a watch case dimensions for a new buy or lug size info in order to buy a fitting replacement bracelet, below you’ll find worthy info on models such as Seiko SKX007, Seiko Alpinist, Seiko Turtle, Seiko SARB033, Seiko Sumo, Seiko MM300, Seiko MM200, Seiko Samurai, Seiko Solar Chrono, Seiko 62MAS Reissue, Seiko Cocktail Time Power Reserve and many more. These information is usually available on both the Seiko website and the booklet you have got within your watch package, but it’s always worthy to have it double-checked, from at least two sources so it doesn’t happen that you buy the watch band that doesn’t fit your watch. Other than that, if you’re interested in dimensions of some watch model that is not shown below, don’t hesitate to reach out and we’ll gladly help you determine the right dimensions of your watch.

 

The most Popular Seiko Divers Watch Dimension PDF file for Download

Click on the image to DOWNLOAD

 

Seiko Watches Size Table & Detail Images

Part 1

Seiko Watch Band 19mm - 20mm Watch Lug Width Watch Case Diameter Spring bars distance Watch thickness
Seiko 5 SNK809 18mm 38mm 43mm 11mm
Seiko SLA017 19mm 40mm 44mm 14mm
Seiko Alpinist 20mm 38mm 43mm 12mm
Seiko SARB033 20mm 37mm 40mm 12mm
Seiko Sumo 20mm 45mm 47mm 14mm
Seiko MM300 20mm 44mm 45mm 15mm
Seiko SKX013 20mm 37mm 41mm 13mm
Seiko SKX023 20mm 37mm 41mm 12mm
Seiko Cocktail time Power Reserve 20mm 40mm 45mm 15mm
Seiko Solar Chrono 20mm 43mm 46mm 14mm
Seiko Monster 20mm 47mm 45mm 13mm
Seiko MM200 20mm 41mm 43mm 13mm
Seiko 62MAS Reissue 20mm 43mm 45mm 14mm
Seiko 63MAS 20mm 43mm 40mm 13mm
Seiko Mini Turtle 20mm 39mm 40mm 13mm
Seiko 5 40mm 20mm 38mm 40mm 12mm

Part 2

Seiko Watch Band 21mm - 24mm Watch Lug Width Watch Case Diameter Spring bars distance Watch thickness
Seiko Pilot Flightmaster 21mm 42mm 44mm 12mm
Seiko SKX007 22mm 41mm 43mm 14mm
Seiko SRP777 Turtle 22mm 42mm 45mm 13mm
Seiko Samurai 22mm 44mm 46mm 13mm
Seiko Tuna SBBN013 22mm 49mm 36mm 16mm
Seiko Tuna SBBN039 22mm 47mm 42mm 16mm
Seiko Tuna SBDB009 22mm 49mm 44mm 17mm
Seiko Tuna SBDX016 22mm 53mm 40mm 17mm
Seiko Tuna SRPA82K1 22mm 52mm 46mm 13mm
Seiko Atlas SKZ209J1 22mm 42mm 46mm 14mm
Seiko 5 Sports SRPD (42.5mm) 22mm 41mm 41mm 13mm
Seiko SNZF17 Sea Urchin 22mm 41mm 46mm 13mm
Seiko Recraft SRPC13 Blue 22mm 43mm 36mm 14mm
Seiko Kinetic PADI SUN065 24mm 50mm 48mm 15mm

Images of Part 1

Seiko Prospex Diver SLA017 -  Details Seiko watch size, Lug width and case dimensions

Seiko SLA017 Prospex automatic watch

Seiko Alpinist SARB017- Details Seiko watch size, Lug width and case dimensions

Seiko Alpinist SARB017 Automatic Watch

Seiko SARB033 Mechanical - Details Seiko watch size, Lug width and case dimensions

Seiko SARB033 Mechanical Automatic Black Dial Watch

Seiko Prospex SBDC031 Black Sumo- Details Seiko watch size, Lug width and case dimensions

Seiko Prospex SBDC031 Black Sumo or Seiko Sumo Green 2019

Seiko MM300, Seiko Marinemaster MM300 SBDX017- Details Seiko watch size, Lug width and case dimensions

Seiko MM300, Seiko Marinemaster MM300 SBDX017

Seiko SKX013 Midsize Diver - Details Seiko watch size, Lug width and case dimensions

Seiko SKX013 Midsize Diver

Seiko SKX023 Midsize Diver- Details Seiko watch size, Lug width and case dimensions

Seiko SKX023 Midsize Diver

Seiko Presage SSA345 Cocktail Time Automatic Watch - Details watch case measurement and dimensions

Seiko Cocktail Time SSA345, Automatic Power Reserve

Seiko Chrono Solar watch SSC015P1- Details Seiko watch size, Lug width and case dimensions

Seiko Chrono Solar watch SSC015P1

Seiko Monster, Seiko Blue Monster Limited Edition SRP455- Details Seiko watch size, Lug width and case dimensions

Seiko Monster, Seiko Blue Monster Limited Edition SRP455

Seiko MM200 Green SPB109J- Details Seiko watch size, Lug width and case dimensions

Seiko MM200 Green SPB109J

Seiko 62MAS reissue, Seiko SPB051- Details Seiko watch size, Lug width and case dimensions

Seiko 62MAS reissue, Seiko SPB051

Seiko SPB143 Prospex Diver 62MAS Reissue (63MAS) - Details Seiko watch size, Lug width and case dimensions

Seiko SPB143 Prospex Diver 62MAS Reissue (63MAS)

Seiko Mini Turtle Padi SRPC41 - Details Seiko watch size, Lug width and case dimensions

Seiko Mini Turtle Padi SRPC41

Seiko 5 40mm - Details Seiko watch size, Lug width and case dimensions

Seiko 5 40mm SRPE61

 

Images of Part 2

Seiko Pilot Flightmaster- Details watch case measurement and dimensions

Seiko Pilot Flightmaster

Seiko SKX007 Diver's 200m Automatic Watch - Details watch case measurement and dimensions

Seiko SKX007 Diver's 200m Automatic Watch

Seiko Green New Turtle Prospex SRPB01K1 Limited Edition 3500 pcs. - Details watch case measurement and dimensions

Seiko Green New Turtle Prospex SRPB01K1 Limited Edition 3500 pcs.

Seiko Prospex Samurai SRPB09 Blue Lagoon - Details watch case measurement and dimensions

Seiko Prospex Samurai SRPB09 Blue Lagoon

Seiko Prospex Marine Master Darth Tuna Professional 1000m Diver Quartz SBBN013 - Details watch case measurement and dimensions

Seiko Prospex Marine Master Darth Tuna Professional 1000m Diver Quartz SBBN013

Seiko PADI Marinemaster Tuna Professional 300M Diver Quartz SBBN039 Limited 700 pcs. - Details watch case measurement and dimensions

Seiko PADI Marinemaster Tuna Professional 300M Diver Quartz SBBN039 Limited 700 pcs.

Seiko Prospex Marine Master 600m Spring Drive SBDB009  - Details watch case measurement and dimensions

Seiko Prospex Marine Master 600m Spring Drive SBDB009

Seiko 50th Anniversary Diver Prospex Marine Master Automatic SBDX016 - Details watch case measurement and dimensions

Seiko 50th Anniversary Diver Prospex Marine Master Automatic SBDX016

Seiko Baby Tuna Prospex Divers Automatic Men's Watch SRPA82K1 - Details watch case measurement and dimensions

Seiko Baby Tuna Prospex Divers Automatic Men's Watch SRPA82K1

Seiko 5 Sports SKZ209J1 200m Atlas Diver - Details watch case measurement and dimensions

Seiko 5 Sports SKZ209J1 200m Atlas Diver

Seiko 5 Sports SRPD63K1 Green - Details watch case measurement and dimensions

Seiko 5 Sports SRPD63K1 Green

Seiko SNZF17 Sea Urchin Automatic Watch - Details watch case measurement and dimensions

Seiko SNZF17 Sea Urchin Automatic Watch

Seiko-Recraft-SRPC13-Blue-watch-case-dimensions

Seiko Recraft SRPC13 Blue

Seiko  Kinetic PADI SUN065 Watch - Details watch case measurement and dimensions

Seiko Kinetic PADI SUN065

Quick Reference watch size guide to some of Strapcode watch bands when pairing with various popular Seiko watch models. In this page, you will also find many useful details dimension and information for your watch.

The Strapcode Watchesgazine Index

The Watchesgazine : Index of MiLTATs fitted watch bands custom made for SEIKO selected watch models

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