BOLDR band size chart by model

BOLDR is a two-width brand: every watch it sells takes 20mm or 22mm, and the brand prints the number on its own product pages, in a spec line and again in a machine-readable store tag [22]. We enumerated the full catalog, 134 watch products, and charted all 133 that print a width: 107 at 20mm and 26 at 22mm. The split is case-driven and has exactly one trap: the Freediver name spans both widths [19] [23]. Third-party strap guides get this wrong, listing the 40mm Freedivers at 22mm [27]; the rows below are the brand's own figures.

Quick answers: every 38mm titanium Venture (including Field Medic, GMT, Diver, Rally) takes 20mm, every 40mm watch (Odyssey 40, Titanium+, Luminaire, Safari, Voyage) takes 20mm, and so do the 41mm Expeditions [8]. The 22mm watches are the big Odysseys only: the 44mm Freediver GMT set at 51 to 52mm lug-to-lug and every 45.5mm Odyssey at 52mm [19] [20]. One collab, the titanium BOLDR x OGL, prints no width anywhere on its page [21].

The chart: 133 catalogued watches, widths from BOLDR's own pages

Model lineCaseLug widthCoversWatch out
Venture Automatic (current)38mm titanium20mmUmbra, Singularity, Blue Moon, Polaris, Sand Storm, Ivory White, Wayfarer colors44mm lug-to-lug; the core field watch [1]
Venture quartz originals38mm titanium20mmJungle Green, Carbon Black, Jet-Black, Adventure Khaki45mm lug-to-lug, 1mm longer than the automatics [3]
Venture Field Medic38mm titanium20mmField Medic I to IV, Destro, Stealth, PFP44mm lug-to-lug; the chronograph that still takes a 20mm strap [4]
Venture GMT38mm titanium20mmGMT Blue, Khaki, Black44mm lug-to-lug; quartz GMT [5]
Venture Diver38mm titanium20mmGreen Star, Staghorn, Five In A Row I and II44mm lug-to-lug [6]
Venture Rally / Velo38 / 41mm titanium20mmRally I, II, III, 797; Velo Mono and Khaki38mm cases sit 44mm lug-to-lug, the 41mm Velo sits 46mm [7]
Expedition I41mm steel20mmWhite Sands, Karakum, Rub' Al Khali46mm lug-to-lug; inner rotating bezel [8]
Expedition II41mm steel20mmEverest, Sinai, Eiger, Matterhorn, Rushmore, El Capitan, Dune 748mm lug-to-lug, 2mm longer than Expedition I [9]
Expedition Enigmath41mm steel20mmCoconino, Sinharaja, Schwarzwald47.5mm lug-to-lug; the only odd half-millimeter in the catalog [10]
Odyssey 40 (Freediver 40)40mm steel20mmFreediver White Frost, Citrus, Mint, Meteo635, Meteo113, Meteo 202, 28848mm lug-to-lug; 300m divers that take the same 20mm strap as a Venture [11]
Odyssey Titanium+40mm titanium20mmOrca, Horizon, Aurora, Crimson, Ember48mm lug-to-lug; the brand tags every one Lug Width_20mm [12]
Odyssey Luminaire / MGP40mm20mmLuminaire Aetherfire, Cryosea, Pelagion; Odyssey MGP48mm lug-to-lug [13]
Safari Ranger / Defender / Merlion40mm steel20mmRanger Kopje, Shamba, Upepo; Defender Siana, Elewana; Merlion 50th46mm lug-to-lug; the 20mm facet lists these by name [14]
Safari GMT40mm steel20mmGMT Serengeti, Maasai Mara, Tarangire, Banff46mm lug-to-lug (Banff 48mm); prints Lug width: 20mm [15]
Voyage40mm steel20mmAntarctic, Mediterranean, PFP Voyage48mm lug-to-lug [16]
Explorer II GMT (archive)42mm steel20mmAstrochimp LE and colorways50mm lug-to-lug; the longest 20mm watch BOLDR has sold [17]
Chronograph collaborations (archive)40mm steel20mmPikachu, Charizard, Venusaur, Blastoise; Venture chrono LEs49.5mm lug-to-lug on the Pokemon set [18]
Odyssey 44 (Freediver GMT)44mm steel22mmFreediver GMT RB1876, CK1886, SP1961; WB1985, PG195451 to 52mm lug-to-lug; the trap: same Freediver name as the 20mm 40mm models [19]
Odyssey 45.5 (Original / Bronze / Regatta)45.5mm steel or bronze22mmBlack Abyss, Coral Brown, Silver Wave, Pacific Blue, Dark Meteo, MeteoGrey, Cali Black, Metal Red; the bronze run; Regatta chronographs52mm lug-to-lug; 500m helium-valve divers, the watch that made the 22mm reputation [20]
BOLDR x OGL (collab, no specs)titaniumnot printedOGL Limited Editionthe one catalog watch whose page prints no width at all; check before ordering [21]

Two widths, one rule: follow the case

Strip away the colorways and collaborations and BOLDR's catalog reduces to a clean rule. Everything 38, 40, 41 or 42mm is 20mm at the lugs: the titanium Venture family at 38mm with 44mm lug-to-lug [2], the Odyssey 40 divers at 48mm lug-to-lug [11], the Safari and Voyage travelers at 46 to 48mm [14] [16], the Expeditions at 46 to 48mm [8] [9]. Everything 44mm and up is 22mm: the Freediver GMTs at 51 to 52mm lug-to-lug [19] and the 45.5mm Odysseys at 52mm [20]. Case size is the whole decision, which is unusual: most brands scatter odd widths across their range, and BOLDR's tag discipline (every product carries a Lug Width_20mm or Lug Width_22mm store tag) is what made a 133-watch verification possible [22].

The Freediver trap: same name, two widths

The Odyssey Freediver is the row to double-check before ordering, because the name covers two watches with different lugs. The Freediver 40mm models, White Frost, Citrus Orange, Mint Green and the meteorite-dial Meteo635, Meteo113, Meteo 202 and 288, print Lug size: 20mm with 48mm lug-to-lug on every product page [11]. The Freediver GMT models RB1876, CK1886 and SP1961, plus the WB1985 and PG1954, are 44mm steel cases printing Lug size: 22mm with 51 to 52mm lug-to-lug [19] [23]. BOLDR's own navigation splits them into separate collections, Odyssey 40 and Odyssey 44,45 [28]. A UK strap retailer's compatibility listing puts every Freediver at 22mm [27], which would leave a 20mm lug gap on all seven of the 40mm models; trust the product pages, not the compatibility chart.

The 22mm minority: the big Odysseys

Twenty-six of the 133 catalogued watches take 22mm, and all of them are Odysseys. The 45.5mm class is the brand's flagship 500m diver with a helium escape valve: the steel originals (Black Abyss, Coral Brown, Silver Wave, Pacific Blue, Reef Green, Dark Meteo, Cali Black, Metal Red), the full bronze run (Aventurine, White Knight, Slate Grey, Serpentine, Auburn, Coal Black, Prussian Blue, Pine Green) and the Regatta chronographs, every one printing Lug size: 22mm and Lug to lug: 52mm [20] [25]. On the archived MeteoGrey, the brand's page prints the case and 22mm tag but omits the lug-to-lug line; a dealer measurement puts it at 53mm [26], a millimeter over the class figure and the only row in this table where we quote a dealer. Before buying a strap for any of these, check the wrist first: 52mm lug-to-lug overhangs a 6.5 inch wrist, and no strap width fixes that.

Strap notes and quick-release hardware

BOLDR ships most watches on straps or bracelets with standard spring bars, and the Venture titanium bracelets use quick-release pins, so a 20mm two-piece strap is a tool-light swap. The brand sells its own 20mm and 22mm straps, and its store filter for Lug Width_20mm is a live cross-check on the chart: the facet surfaces exactly the 20mm watches named above [24]. For aftermarket straps the lug width is the only number that must match; taper is cosmetic, and the watch strap taper chart explains the two-number notation. If your BOLDR is not in the catalog feed, a sold-out collaboration or a regional exclusive, measure the gap: the measuring guide covers the caliper method in two minutes.

How we verified this

We enumerated BOLDR's full catalog from the brand's own Shopify store (134 watch products) and read the spec block on every product page: the Lug size line, the Lug to lug line and the case size, cross-checked against the Lug Width store tags and the store's own lug-width facet filter [22]. The three surfaces agreed everywhere they overlapped: 107 watches print 20mm, 26 print 22mm, and the single holdout is the BOLDR x OGL collaboration, whose page prints no dimensions at all [21]. Nothing in the table is inferred from case size alone; where a class has one deviant (the quartz Ventures at 45mm lug-to-lug, the Banff GMT at 48mm, the Enigmath at 47.5mm) the row says so. Dealer and retailer listings appear only as flagged cross-checks, never as the source of a width figure [26] [27].

Related guides

To check the lug gap yourself, the measuring guide covers the caliper method, and the lug width chart by brand places BOLDR's clean 20/22 split against brands that scatter odd widths. The master band size chart indexes every brand on this site. For the other Singapore microbrands with one-look width rules, see the Zelos chart and the Lorier chart, where every current watch is 20mm.

Sources

  1. BOLDR (official), Venture Carbon Black product page, spec block: Case Size 38mm, Lug size: 20mm, Lug to lug: 44mm (quartz originals print 45mm): www.boldrsupply.co
  2. BOLDR (official), Venture Umbra product page, spec block: 38mm titanium, Lug size: 20mm, Lug to lug: 44mm: www.boldrsupply.co
  3. BOLDR (official), Field Medic I product page, spec block: 38mm titanium, Lug size: 20mm, Lug to lug: 44mm: www.boldrsupply.co
  4. BOLDR (official), Venture GMT Khaki product page, spec block: 38mm titanium, Lug Width_20mm, Lug to lug: 44mm: www.boldrsupply.co
  5. BOLDR (official), Venture Green Star (Diver) product page, spec block: 38mm titanium, Lug size: 20mm, Lug to lug: 44mm: www.boldrsupply.co
  6. BOLDR (official), Rally I - Wells 008 product page, spec block: 38mm titanium, Lug size: 20mm, Lug to lug: 44mm: www.boldrsupply.co
  7. BOLDR (official), Venture Velo Khaki product page, spec block: 41mm titanium, Lug size: 20mm, Lug to lug: 46mm: www.boldrsupply.co
  8. BOLDR (official), Expedition I Karakum product page, spec block: 41mm steel, Lug size: 20mm, Lug to lug: 46mm: www.boldrsupply.co
  9. BOLDR (official), Expedition II Everest product page, spec block: 41mm steel, Lug size: 20mm, Lug to lug: 48mm: www.boldrsupply.co
  10. BOLDR (official), Expedition Enigmath Coconino product page, spec block: 41mm steel, Lug size: 20mm, Lug to lug: 47.5mm: www.boldrsupply.co
  11. BOLDR (official), Odyssey Freediver White Frost product page, spec block: 40mm steel, Lug size: 20mm, Lug to lug: 48mm: www.boldrsupply.co
  12. BOLDR (official), Odyssey Orca product page, spec block: 40mm titanium, Lug size: 20mm, Lug to lug: 48mm; store tag Lug Width_20mm: www.boldrsupply.co
  13. BOLDR (official), Odyssey Luminaire Aetherfire product page, spec block: 40mm, Lug size: 20mm, Lug to lug: 48mm: www.boldrsupply.co
  14. BOLDR (official), Ranger Kopje product page, spec block: 40mm steel, Lug size: 20mm, Lug to lug: 46mm; appears in the lug-width_20mm facet: www.boldrsupply.co
  15. BOLDR (official), Safari GMT Serengeti product page, spec block: 40mm steel, Lug width: 20mm, Lug to lug: 46mm: www.boldrsupply.co
  16. BOLDR (official), Voyage Antarctic product page, spec block: 40mm steel, Lug size: 20mm, Lug to lug: 48mm: www.boldrsupply.co
  17. BOLDR (official), Explorer II GMT Astrochimp LE product page, spec block: 42mm steel, Lug size: 20mm, Lug to lug: 50mm: www.boldrsupply.co
  18. BOLDR (official), Pikachu LE product page, spec block: 40mm steel, Lug size: 20mm, Lug to lug: 49.5mm: www.boldrsupply.co
  19. BOLDR (official), Odyssey Freediver GMT RB1876 product page, spec block: 44mm steel, Lug size: 22mm, Lug to lug: 52mm: www.boldrsupply.co
  20. BOLDR (official), Odyssey Bronze Aventurine product page, spec block: 45.5mm bronze, Lug size: 22mm, Lug to lug: 52mm: www.boldrsupply.co
  21. BOLDR (official), BOLDR x OGL Limited Edition product page: bead-blasted titanium case, no lug width, case size or lug-to-lug printed anywhere on the page: www.boldrsupply.co
  22. BOLDR (official), full catalog feed www.boldrsupply.co/collections/all.atom (25 entries) and products.json enumeration: 134 watch products, 133 printing a lug width (107 at 20mm, 26 at 22mm), September 2026: www.boldrsupply.co
  23. BOLDR (official), Odyssey Freediver WB1985 product page, spec block: 44mm steel, Lug size: 22mm, Lug to lug: 52mm; the sibling that proves the 44mm Freedivers are 22mm: www.boldrsupply.co
  24. BOLDR (official), lug-width facet: Watch Straps & Bracelets tagged Lug Width_20mm (live collection filter, lists Odyssey MGP, Safari Silver Fox, Merlion 50th, Voyage PFP): www.boldrsupply.co
  25. BOLDR (official), Odyssey Black Abyss 2.0 product page, spec block: 45.5mm steel, Lug size: 22mm, Lug to lug: 52mm: www.boldrsupply.co
  26. SeriousWatches (dealer), BOLDR Odyssey MeteoGrey listing: Lugs 22mm, lug to lug 53mm; the only row where the dealer measurement differs from the class figure: www.seriouswatches.com
  27. Luxury Watch Straps (retailer), BOLDR compatibility listing: 20mm for Venture, Wayfarer, Field Medic; claims 22mm for Odyssey Freediver and Expedition, which the brand's own pages correct to 20mm: luxurywatchstraps.co.uk
  28. BOLDR (official), collection taxonomy: Odyssey 40 and Odyssey 44,45 are separate nav categories, the split that decides 20mm versus 22mm: www.boldrsupply.co