Size & Compatibility Guide
Size & Compatibility Guide
Find the right strap for your watch. Learn all about lug widths, compatibility, and which TWG product suits your watch.
Measure Lug Width
The lug width is the distance between the two lugs of your watch. You need it to find the right strap.
Remove the strap
Remove the current strap from your watch to have clear access to the lugs.
Measure inner distance
Measure the distance between the two inner edges of the lugs. This is your lug width in mm.
Choose your strap
Choose a strap with exactly this width. The most common sizes are: 18mm, 20mm and 22mm.
💡 No measuring tool at hand?
Check the watch manufacturer's website or search for the model name + "lug width". In our table below, you'll find the most common watches already listed.
NATO Straps – Compatibility
Our Horizon NATO 3.0, Seatbelt NATO, and Elastic NATO straps are available in 20mm and fit most sports and dress watches with a 20mm lug width.
| Brand | Model | Lug Width | Fits? |
|---|---|---|---|
| Rolex | Submariner, GMT-Master II, Explorer I | 20mm | ✓ Fits |
| Rolex | Daytona, Datejust 36 | 20mm | ✓ Fits |
| Rolex | Datejust 41, Sky-Dweller | 21mm | ✗ No |
| Omega | Speedmaster Professional (Moonwatch) | 20mm | ✓ Fits |
| Omega | Seamaster 300M (42mm) | 20mm | ✓ Fits |
| Omega | Seamaster Planet Ocean (43.5mm) | 22mm | ✗ No |
| Tudor | Black Bay 41, Pelagos 39 | 20mm | ✓ Fits |
| Tudor | Black Bay 58 | 20mm | ✓ Fits |
| Tudor | Pelagos 42 | 22mm | ✗ No |
| IWC | Portugieser Chronograph | 20mm | ✓ Fits |
| IWC | Mark XX | 20mm | ✓ Fits |
| Cartier | Santos (Medium & Large) | Proprietary | ✗ No |
| Breitling | Navitimer 41, Superocean 42 | 20mm | ✓ Fits |
| TAG Heuer | Carrera, Aquaracer | 20–22mm | Model Dependent |
| Seiko | Presage, Prospex "Alpinist" | 20mm | ✓ Fits |
| Seiko | SKX007/009, Prospex Turtle | 22mm | ✗ No |
| Grand Seiko | SBGA211 "Snowflake", Heritage | 20mm | ✓ Fits |
| Longines | Spirit, HydroConquest 41mm | 20mm | ✓ Fits |
📐 Your watch isn't listed?
If your watch has a lug width of exactly 20mm, all our NATO straps will fit. If you're unsure, contact us at contact@thewristguy.eu – we'll be happy to help!
Rubber Straps – Speedmaster & MoonSwatch
Our MoonSwatch rubber straps are specifically designed for the Omega x Swatch MoonSwatch, but also fit the classic Omega Speedmaster Professional.
| Model | Lug Width | Fits? | Note |
|---|---|---|---|
| Omega x Swatch MoonSwatch (all models) | 20mm | ✓ Perfect | Curved End, flush fit |
| Omega Speedmaster Professional (Hesalite & Sapphire) | 20mm | ✓ Fits | Small gap possible, but fits securely |
| Omega Speedmaster '57 | 20mm | ⚠ Limited | Different lug geometry |
| Other 20mm watches | 20mm | ⚠ Limited | Curved End optimized for MoonSwatch/Speedmaster |
Canvas Straps
Our new water-resistant canvas straps with rubber lining. Two-piece straps with quick-release spring bars for easy changing.
| Available Width | Clasp | Compatible with |
|---|---|---|
| 20mm | TWG Pin Buckle (brushed/polished) | All watches with 20mm lug width and standard spring bars |
⚡ Quick-Release
Both canvas models come with quick-release spring bars. This means: strap changes in seconds, without tools. Simply pull the lever and swap the strap.
Apple Watch Straps
Our Ocean Bands and Magnet Bands are suitable for all Apple Watch models.
| Apple Watch Model | Case Size | Strap Size | Fits? |
|---|---|---|---|
| Apple Watch Series 4–9, SE | 40mm / 44mm | S/M or M/L | ✓ Fits |
| Apple Watch Series 7–9 | 41mm / 45mm | S/M or M/L | ✓ Fits |
| Apple Watch Ultra / Ultra 2 | 49mm | M/L | ✓ Fits |
| Apple Watch Series 1–3 | 38mm / 42mm | – | ✗ No |
Watch Rolls & ZIP Cases
Our storage solutions are designed for most common watch sizes. Here are the maximum dimensions.
Watch Roll (3 Watches)
- Max. case diameter: 44mm
- Max. lug-to-lug: 52mm
- Removable cushions
- Fits Rolex, Omega, Tudor etc.
- Padded dividers
ZIP Case (6 Watches)
- Max. case diameter: 46mm
- Max. lug-to-lug: 54mm
- Zipper closure
- Also fits larger divers
- Individual watch compartments
ZIP Case (1 Watch)
- Max. case diameter: 46mm
- Max. lug-to-lug: 54mm
- Compact for travel
- Individual protection for your daily
- Fits in any bag
⌚ Oversized Watches
Watches with a case diameter over 46mm (e.g., Panerai Luminor 47mm, Breitling Super Avenger 48mm) may not fit depending on their lug-to-lug measurement. If in doubt, contact us – we'll be happy to advise you.
Frequently Asked Questions
Do I need tools to change the strap?
Do your straps also fit 19mm or 21mm watches?
Are spring bars included?
Can I wear a NATO strap on a dress watch?
How do I care for my NATO strap?
Do your rubber straps also fit watches other than the MoonSwatch?
Still unsure?
Write to us with your watch model – we'll tell you exactly which strap fits.
Inquire now
From a watch collector for watch collectors
Hi, I'm Burak. What started as a YouTube hobby has now become one of the largest German-speaking watch communities.
Every product in this shop is born from the same passion as my videos: I want the best for your watch – handcrafted, well thought out, to the point.
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