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  • 100% Certified Authentic

    Bob's Watches
    100% Certified Authentic

    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

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100% Certified Authentic

Bob's Watches
100% Certified Authentic

At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

Low Price Guarantee
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Low Price Guarantee

Bob's Watches is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Low Price Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer.

Here's how:

  • If you find a qualifying lower price online, call 1-800-494-3708 and direct a customer service agent to the web site with the lower price.
  • On qualifying products, Bob's Watches will then verify the current price to complete the price match.

Purchase price shown is the cash wire price, and any payment method fees such as credit card fees, PayPal fees, Amazon fees, etc, will be added to the transaction total. Prices may be higher if other payment methods are selected. Some exclusions apply. See the list of Designated Major Online Retailers and full details.

Free Overnight Delivery
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Free Shipping Guarantee

Free priority overnight shipping on all orders applies to U.S. orders only.

Unlike many other websites that have special rules and lots of fine print , Bobswatches.com offers free shipping on all domestic orders placed on our website, with no minimum order size or special exceptions. Just because shipping is free doesn’t mean it should take a long time. Bobswatches.com understands that getting your item quickly is important to you, so we make every effort to process your order as quickly as possible.

Rolex Watch Case Sizes

When purchasing a Rolex, one of the most important factors to consider is the size of the watch case. Buyers, both men and women, always want to know the available watch sizes in order to find the watch that will best fit their wrist. Rolex has made minor revisions and enhancements to the case throughout the years, but their familiar, iconic look has remained the same.

This may sound blindingly obvious, but there are one or two things you should be aware of before you set out to proclaim your watch ##mm with absolute confidence. Arm yourself with a trusty Vernier tool (a pair of measuring calipers), and head out into the wild to enjoy the pre-owned luxury watch measuring safari that awaits!

How To Measure The Case Size Of A Watch

Firstly, you should be aware of the industry norms. The diameter of a watch is its external width across its horizontal axis (from 9 o'clock to 3 o'clock), The vast majority of diameters are listed without taking into account the protrusion of the crown or crown guards. That means the number listed is almost always the diameter of the case, but not the amount of real estate that will be taken up by the watch once it is on your wrist. For example, the Rolex Submariner 116610 has the same 40mm case diameter as its predecessor; however, it appears significantly larger due to its thicker lugs and crown guards.

How to Measure the Case Size of a Watch - Rolex GMT-Master II Batman

Height

When we talk about the "height" of a watch, we are talking about how thick it is, or how tall it will stand up on your wrist. For example, you would expect dress watches to be very slim, and sports chronographs to be quite thick, or tall. Be aware, though, that some brands – especially those which use high domed or box sapphire crystals – occasionally list the height of the case without the crystal. This is unusual but certainly not unheard of.

Length

Although the term "length" is not often used to describe the lug-to-lug measurement, it is an appropriate one in this context. This measurement is nothing to do with the distance between the lugs (which will denote the width of the strap of bracelet your watch requires), but rather the tip of one lug to the tip of its opposite equal. This “length” is very important because it can vastly impact the overall wearability of a watch.

If, for example, you were to take a SevenFriday P3 model and a NOMOS Club Campus 36, you would immediately assume there was no way they could be worn on the same wrist. However, the “lugless” case of the SevenFriday P3 measures 47mm in diameter, but only 47.6mm in length. Meanwhile, the NOMOS Club Campus has a 36mm diameter, but a surprisingly large 47.2mm lug-to-lug length, proving that it is not always beneficial to judge a watch by its case diameter alone. Additionally, the shape and thickness of the lugs themselves can also impact the perceived size of a watch, which can be seen in the Rolex "Super Case" watches that appear larger than their predecessors, despite having identical case measurements.

Usually, one would expect to find measurements expressed in the following way: diameter × height × length. If only one number is given (for example, 42mm) it should be taken to mean the diameter (without the crown). If two numbers are listed, then things may become a little more confusing. If the watch in question is round, then these numbers will usually stand for diameter × height. However, if the watch is a cushion or rectangular shape, these numbers will likely stand for diameter and length between the lugs. Worse still, there is little agreement among brands as to which number should be featured first. The vast majority of brands will list the diameter first for the sake of consistency, but some major labels (such as Hamilton) actually list the external vertical axis measurement (from 12 o’clock to 6 o’clock) first.

The size of true square watches is always expressed by horizontal axis × vertical axis (so width × length between the lugs). However, the size of a square watch is incredibly deceptive. What is more indicative of its size relative to other watches on the market is its corner-to-corner measurement. That will give you a better idea of how much wrist space it will command while worn. Case in point, a square watch listed as 33mm × 33mm will actually have a corner-to-corner measurement of 46mm, meaning that it is far from a shrinking violet.

Once you have established what kind of dimensions you feel comfortable wearing, you then have to figure out how to attach those watches to your wrist. An easy way of measuring the circumference your non-circular wrist is to wrap a piece of string around it and then remove it and lay it flat against a ruler. Most people have wrists between 6 and 8 inches, with the vast majority being clustered around 6.5 to 7.5 inches. But remember to factor in the case size of a watch when it comes to ordering a replacement strap!

And if you do have a very small, or very large wrist, worry not. There are plenty of very talented bespoke strap makers in the world that do not charge the Earth for custom bands!

Sport Watch SizeS

The largest available case sizes Rolex has to offer are featured on their sport watches. Designed to be durable and reliable, Rolex dive watches and travel watches have stood the test of time, and remain the world's most sought-after sports watches.

Rolex GMT Master II Rolex Daytona Rolex Submariner Rolex Sea-Dweller Rolex Explorer II Rolex Yacht-Master
Rolex GMT-Master II Rolex Cosmograph Daytona Rolex Submariner Rolex Sea-Dweller Rolex Explorer II Rolex Yacht-Master

Case Size Model  Reference Date Case (mm)  Thickness (mm)  Bezel (mm)  Crystal (mm) Bracelet Width (mm) Clasp Width (mm)
Sports Submariner 14060 N 40 12.3 39.5 29.2 20 17
Sports Submariner 16610 Y 40 13 40 30.5 20 17
Sports Submariner 16610LV Y 40 13 40 30.5 20 17
Sports Submariner 16613 Y 40 13 40 30.5 20 17
Sports Submariner 16618 Y 40 13 40 30.5 20 17
Sports Submariner 16800 Y 39 14.8 40 30.5 20 16.8
Sports Seadweller 16600 Y 40 14.8 39.5 29.5 20 17
Sports Explorer II 16570 Y 40 12.2 39 30.5 20 16.5
Sports GMT Master 16700 Y 40 11.8 40 30.5 20 16.7
Sports GMT Master II 16710 Y 40 12.4 40 30.5 20 16.5
Sports GMT Master II 16713 Y 40 12.4 40 30.5 20 16.5
Sports GMT Master II 16718 Y 40 12.4 40 30.5 20 16.5
Sports Daytona 116520 N 40 12.2 38.5 30.5 20 17.2
Sports Daytona 116523 N 40 12.2 38.5 30.5 20 17.2
Sports Daytona 116528 N 40 12.2 38.5 30.5 20 17.2
Sports Yacht-Master 16622 Y 40 11.6 40 30 20 16.5
Sports Yacht-Master 16628 Y 40 12 40 30 20 16.5
Sports Yacht-Master 168622 Y 35 10.8 34.1 25.25 17.2 15

To see our Submariner inventory, Yacht-Master collection, Daytona models, GMT watches, Seadweller timepieces or Rolex Explorer selection please visit our Rolex models page.

Mens watch Sizes

The second largest size in the family of Rolex watches are the men's watches.

Rolex Sky-Dweller Rolex Datejust II Rolex Day-Date Rolex Cellini Rolex Milgauss Rolex Yacht-Master
Rolex Sky-Dweller Rolex Datejust II Rolex Day-Date Rolex Cellini Rolex Milgauss
Rolex Air-King
Case Size Model  Reference Date Case (mm)  Thickness (mm)  Bezel (mm)  Crystal (mm) Bracelet Width (mm) Clasp Width (mm)
Gents DateJust 16200 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16203 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16220 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16233 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16234 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16238 Y 36 11.7 34.5 30.5 20 16.8
Gents DateJust 16248 Y 36 11.7 34.5 30.5 20 16.8

Unisex and Mid-size Cases

Slightly smaller than the gents size and a perfect fit for both the male and female Rolex wearer.

Rolex Oyster Perpetual Rolex Datejust Rolex Date
Rolex Oyster Perpetual Rolex Datejust Rolex Date

Case Size Model  Reference Date Case (mm)  Thickness (mm)  Bezel (mm)  Crystal (mm) Bracelet Width (mm) Clasp Width (mm)
Unisex Date 15200 Y 34 11.7 33.5 29.5 19 15.3
Unisex Date 15210 Y 34 11.7 33.5 29.5 19 15.3
Unisex Date 15223 Y 34 11.7 33.5 29.5 19 15.3
Unisex Date 15233 Y 34 11.7 33.5 29.5 19 15.3
Unisex Date 15238 Y 34 11.7 33.5 29.5 19 15.3
Midsize DateJust 78158 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78159 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78240 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78248 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78273 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78274 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78278 Y 31 10.4 29.2 25.3 19 15.3
Midsize DateJust 78279 Y 31 10.4 29.2 25.3 19 15.3
Midsize Oyster Perpetual 67480 N 31 10.4 29.2 25.3 17 15.3
Midsize Oyster Perpetual 67483 N 31 10.4 29.2 25.3 17 15.3
Midsize Oyster Perpetual 77014 N 31 10.4 29.2 25.3 17 15.3
Midsize Oyster Perpetual 77080 N 31 10.4 29.2 25.3 17 15.3
Midsize Oyster Perpetual 77483 N 31 10.4 29.2 25.3 17 15.3
Midsize Oyster Perpetual 77518 N 31 10.4 29.2 25.3 17 15.3

Ladies SizeS

The standard sizes for a ladies Rolex watch.

Rolex Lady Datejust Rolex Lady President Rolex Date Rolex Pearlmaster
Lady Datejust Lady President Lady Yacht-Master Rolex Pearlmaster

Case Size Model  Reference Date Case (mm)  Thickness (mm)  Bezel (mm)  Crystal (mm) Bracelet Width (mm) Clasp Width (mm)
Ladies Regular Date 79160 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79163 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79173 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79174 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79175 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79178 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79179 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79190 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79239 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Date 79240 Y 26 10.7 25 21.3 13 11.5
Ladies Regular Pearlmaster 80318 Y 29 11.4 27.5 21.5 14.2 12
Ladies Regular Pearlmaster 80319 Y 29 11.4 27.5 21.5 14.2 12
Ladies Regular Pearlmaster 80298 Y 29 11.4 27.5 21.5 14.2 12

24mm watches designed for women with smaller wrists or who prefer a tighter fit for their Rolex watch, and are mostly discontinued.

Case Size Model  Reference Date Case (mm)  Thickness (mm)  Bezel (mm)  Crystal (mm) Bracelet Width (mm) Clasp Width (mm)
Ladies Baby Oyster Perpetual 67230 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76030 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76080 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76094 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76183 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76188 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76193 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76198 N 24 9.7 23.6 20 13 11.5
Ladies Baby Oyster Perpetual 76243 N 24 9.7 23.6 20 13 11.5

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Bob's Watches is an independent watch dealer and is not sponsored by, associated with and/or affiliated with Rolex, or any other brand listed. Bob's Watches only sells pre-owned watches and provides its own warranties on the watches it sells. Rolex Datejust, Rolex Day Date President, Submariner, Presidential, Explorer, Sea Dweller, Super President, GMT Master, GMT, YachtMaster, Prince, Milgauss, MasterPiece, Air King, Cosmograph Daytona, and PearlMaster, etc are all registered trademarks of the Rolex Corporation. All brands including Brequet, Cartier, Audemars Piguet, Patek Philippe, Ulysse Nardin, Breitling and Omega, etc are trademarks of their respective owners.