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A. Lange & Söhne 1815 235.026

Case Diameter: 38.5mm

Lug Width: 20mm

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A. Lange & Söhne 1815 235.026

Case Diameter:

38.5mm

Lug Width:

20mm

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A. Lange & Söhne 1815 235.026

Select a Strap

A. Lange & Söhne 1815 235.026

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See our strap sizing guide

One of the fears of buying straps online is that you might not know if the strap is of the correct length to suit your wrist. We hope that by the time you are done reading this page, you will know what size you should get. There are three methods that we will run through:

  1. Method 1 - Quick and Dirty
  2. Method 2 - Not-So-Quick Math
  3. Method 3 - Wrist Check

 

Size Chart

 

Measurements Description S M L
A Lug width Varies by lug width
(see product listing)
B Buckle width
C Long strap length 105mm 115mm 125mm
D Short strap length 65mm 70mm 75mm
E Distance to middle hole 63mm 71mm 81mm
F Distance between holes 6mm
G Size of holes 1.8mm
Number of Strap Holes 7 7 7

 

Method 1 - Quick and Dirty

This method is the quickest way to know what size to order, but it might not be very precise. What you will need is an existing two-piece strap on your watch. It does not have to be a leather strap.

  1. Measure the length of the long and short piece of the strap. (Example: 105mm on the long strap, and 80mm on the short strap)
  2. Sum up the lengths. (105+80=185mm)
  3. Choose the size (S, M or L) that is the closest to the total length of your existing straps. (The closest size in this example would be M (115mm + 70mm = 185mm)
  4. Note that this is still an approximation, and you should adjust accordingly if your current strap does not fit your wrist perfectly.

 

Method 2 - Not-So-Quick Math

This method builds on Method 1, and has more math involved. Similarly, you will need an existing two-piece strap on your watch. The basic idea is that you want to ensure that the total length based on where your buckle sits on your current strap, will be similar to your new strap.

  1. Measure the length of the short piece of the strap. (Example: 80mm)
  2. On the long strap, measure the length from the lug to the most used strap hole. Referring to the schematic above, if the middle hole is the most used hole, that would be length E. (Example: 60mm)
  3. Sum the two lengths (80+60=140mm)
  4. Determine which hole on the strap you would prefer to have your buckle fitted on, and measure the length from the lug to the hole. If you like having a longer "tail", you can have the buckle fitted on the top-most hole, closest to the lug end. Alternatively, if you prefer not to have a long "tail", you can wear the strap with the buckle on the bottom-most hole, furthest from the lug end. (In this example, assume that I prefer to use the middle strap hole for M strap = 71mm)
  5. Subtract the length in Step 3, from the length of the lug to the most used hole. This is the "ideal length" of the short piece of the strap. (140mm-71mm=69mm)
  6. Assess if that particular strap length will work for you, else find another strap length. If none are suitable, you can custom make a strap of your ideal length.

Method 3 - Wrist Check

If your existing watch does not have a normal strap (you have a bracelet on), you would need to measure your wrist size and purchase the strap size according to the guidelines below. If you are between sizes (for e.g. wrist size of 17.5cm), we recommend to size up.


Small: 14.9cm - 18.4cm
Medium: 16.3cm - 20.5cm
Large: 17.7cm - 22.6cm

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A. Lange & Söhne 1815 235.026

A. Lange & Söhne 1815 Up/Down 234.026

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A. Lange & Söhne Saxonia 219.028

Cartier Tank Solo XL

FP Journe Chronometre Bleu

FP Journe Classique Chronometre Souverain

FP Journe Classique Octa Lune

FP Journe Elegante 48

Grand Seiko SBGA211 Snowflake

Grand Seiko SBGH267 Whirlpool

Grand Seiko SBGK005

Grand Seiko SBGK007

Grand Seiko SBGK009

Grand Seiko SBGM221

Grand Seiko SBGW231

Hamilton Khaki Field Mechanical White

Hamilton Khaki Field Mechanical

IWC Big Pilot Watch "Le Petit Prince" IW501002

IWC Mark XVIII

IWC Pilot's Automatic Chronograph IW377710

IWC Pilot's Top Gun Automatic IW326901

IWC Pilot's Watch Automatic 36 IW324001

IWC Portugieser Chronograph

JLC Master Control Date

JLC Master Geographic

JLC master Ultra Thin Moon 1363540

JLC Master Ultra Thin Perpetual

JLC Reverso Classic Medium Duoface Small Seconds

JLC Reverso Classic Medium Thin

Longines Heritage Classic

Longines Spirit Automatic 40mm

Nomos Ludwig Neomatik 41 Date

Nomos Metro Neomatik 1106

Nomos Orion Neomatik 41 Date Midnight Blue

Nomos Tangente 38

Nomos Zurich World Time Midnight Blue

Omega 1957 Trilogy Railmaster

Omega Aqua Terra 150M Co-Axial Blue

Omega Aqua Terra 150M Co-Axial Green

Omega Aqua Terra 150M Co-Axial Grey

Omega Diver 300M Co-Axial Master Chronometer 43.5MM

Omega Seamaster 300 Spectre

Omega Speedmaster First Omega in Space

Omega Speedmaster Mitsukoshi

Omega Speedmaster Professional

Omega Speedmaster Silver Snoopy

Omega Speedmaster Speedy Tuesday 1

Omega Speedmaster Speedy Tuesday 2

Oris Big Crown Pointer Date 80th Anniversary

Oris Big Crown Pointer Date Blue

Oris Big Crown Pointer Date Red

Patek Philippe Calatrava 5196G

Patek Philippe Calatrava 5212A

Patek Philippe Grand Complication 5327R

Rolex Datejust 41 126334 Blue

Rolex Datejust 41 126334 Grey

Rolex Daytona 116500

Rolex Daytona 116520

Rolex Explorer 14270

Rolex Explorer II 216570

Rolex GMT-Master II Batman 126710BLNR

Rolex Oyster Perpetual 41 Reference 124300

Seiko Presage Cocktail Time SRPB41

Seiko Presage Cocktail Time SRPE19

Seiko Presage Enamel Dial SARK013

Seiko SARB017 Alpinist

Seiko SKX007

Seiko SLA017

Sinn 356

Sinn 556

Tudor Black Bay 58

Tudor Black Bay 58 Blue

Zenith 50th El Primero Anniversary

Zenith El Primero Chronomaster

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