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.
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.
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.
|Seiko Watch Band 20mm - 19mm||Watch Lug Width||Watch Case Diameter||Spring bars distance||Watch thickness|
|Seiko 5 Sports SNK809||18mm||38mm||43mm||11mm|
|Seiko Sumo SBDC031||20mm||45mm||47mm||14mm|
|Seiko Cocktail time Power Reserve||20mm||40mm||45mm||15mm|
|Seiko Solar Chrono||20mm||43mm||46mm||14mm|
|Seiko 62MAS Reissue||20mm||45mm||43mm||14mm|
|Seiko Mini Turtle||20mm||39mm||40mm||13mm|
|Seiko Watch Band 22mm - 21mm||Watch Lug Width||Watch Case Diameter||Spring bars distance||Watch thickness|
|Seiko Pilot Flightmaster||21mm||42mm||44mm||12mm|
|Seiko SRP777 Turtle||22mm||42mm||45mm||13mm|
|Seiko SRPB09 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 SRPD63K1 Green||22mm||41mm||41mm||13mm|
|Seiko SNZF17 Sea Urchin||22mm||41mm||46mm||13mm|
|Seiko Recraft SRPC13 Blue||22mm||43mm||36mm||14mm|
Images of Part 1
Seiko 5 Sports automatic SNK809
Seiko SLA017 Prospex automatic watch
Seiko Alpinist SARB017 Automatic Watch
Seiko SARB033 Mechanical Automatic Black Dial Watch
Seiko Prospex SBDC031 Black Sumo or Seiko Sumo Green 2019
Seiko MM300, Seiko Marinemaster MM300 SBDX017
Seiko SKX013 Midsize Diver
Seiko SKX023 Midsize Diver
Seiko Cocktail Time SSA345, Automatic Power Reserve
Seiko Chrono Solar watch SSC015P1
Seiko Monster, Seiko Blue Monster Limited Edition SRP455
Seiko MM200 Green SPB109J
Images of Part 2
Seiko Green New Turtle Prospex SRPB01K1 Limited Edition 3500 pcs.
Seiko Prospex Samurai SRPB09 Blue Lagoon
Seiko Prospex Marine Master Darth Tuna Professional 1000m Diver Quartz SBBN013
Seiko PADI Marinemaster Tuna Professional 300M Diver Quartz SBBN039 Limited 700 pcs.
Seiko Prospex Marine Master 600m Spring Drive SBDB009
Seiko 50th Anniversary Diver Prospex Marine Master Automatic SBDX016
Seiko Baby Tuna Prospex Divers Automatic Men's Watch SRPA82K1
Seiko 5 Sports SKZ209J1 200m Atlas Diver
Seiko 5 Sports SRPD63K1 Green
Seiko SNZF17 Sea Urchin Automatic Watch
Seiko Recraft SRPC13 Blue
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.