Vario band size chart by model: the dual-width catalog

Vario is the Singapore maker whose product pages answer the strap question in a way no chart has copied: most families print two widths in one line, because most families ship in two case sizes. The 1918 Trench rail reads Lug width: 18mm(37mm) or 20mm(40mm) Lug to lug: 45mm(37mm) or 48mm(40mm) [8][9], the A-11S reads 18mm(35mm) or 20mm(40mm) [14], and the D12 reads 18mm(37mm) or 20mm(41mm) [16]. This chart was built from the vario.sg catalog itself, all 331 products enumerated fresh at build time [1], the 59 watch listings re-derived with the strap and accessory SKUs excluded, and every rail below quoted verbatim from the product page that prints it.

Quick answer: check the case size first, then the width. 37mm and 35mm Vario cases take 18mm straps (Trench, Pilot, Merlion, SG60, D12 37mm-only, A-11S 35mm, x RZE titanium trench). 40mm and 41mm cases take 20mm (Trench 40mm, A-11S 40mm, D12 41mm, Medic, NAVI Voyage 38mm, Futurist 39mm, every Empire). The two exceptions that break the case-size rule: VERSA Single Time at 22mm on a reversible case and VERSA Dual Time at 20mm, both widths printed, neither lug-to-lug printed.

The printed rails: all 17 signatures, all 59 watches

WatchWidthLug-to-lugCaseRail exactly as printed
NAVI Voyage (5 listings)[6][7]20 mm4638mm, 11mm thickCrystal: domed sapphire crystal with inner AR applied Lug width: 20mm Lug to lug: 46mm Case Material: 316L stainless
1918 Trench, steel + brass (9 listings)[8][9]18mm(37mm) or 20mm(40mm)45mm(37mm) or 48mm(40mm)37mm or 40mmLug width: 18mm(37mm) or 20mm(40mm) Lug to lug: 45mm(37mm) or 48mm(40mm)
1918 Pilot (4 listings)[10]18mm (37mm) or 20mm (40mm)45mm (37mm) or 48mm (40mm)37mm or 40mmLug width: 18mm (37mm) or 20mm (40mm) Lug to lug: 45mm (37mm) or 48mm (40mm)
1918 Medic brass (1 listing)[11]20 mm4840mmLug width: 20mm Lug to lug: 48mm Lume: C3 Lume Case Material: Brass
1918 Merlion Trench (1 listing)[12]18mm(37mm) or 20mm(40mm)45mm(37mm) or 48mm(40mm)37mm or 40mmLug width: 18mm(37mm) or 20mm(40mm) Lug to lug: 45mm(37mm) or 48mm(40mm)
1918 SG60 Merlion LE (1 listing)[13]18 mm4537mm onlyLug width: 18mm Lug to lug: 45mm
1945 A-11S Solar (3 listings)[14][15]18mm(35mm) or 20mm(40mm)41mm(35mm) or 48mm(40mm)35mm or 40mmLug width: 18mm(35mm) or 20mm(40mm) Lug to lug: 41mm(35mm) or 48mm(40mm)
1945 D12 dual-size (3 listings)[16]18mm(37mm) or 20mm(41mm)45mm(37mm) or 49mm(41mm)37mm or 41mmLug width: 18mm(37mm) or 20mm(41mm) Lug to lug: 45mm(37mm) or 49mm(41mm)
1945 D12 Shadow Grey, 37mm only (1 listing)[17]18 mm4537mm onlyLug width: 18mm Lug to lug: 45mm
1945 D12 Bronze Fume (1 listing)[18]18 mm4537mm onlyLug width: 18mm Lug to lug: 45mm
Empire Tuxedo chrono (6 listings)[19][20]20 (Strap Width)4638mm, 11.5mm thickSpecifications Diameter: 38mm Lug to Lug: 46mm Thickness: 11.5mm Strap Width: 20mm
Empire Art Nouveau LE (4 listings)[21]20 (Strap Width)4638mm, 11mm thickSpecifications Diameter: 38mm Lug to Lug: 46mm Thickness: 11mm Strap Width: 20mm
Empire Seasons True GMT LE (4 listings)[22][23]20 (Strap Width)4638mm, 12mm thickSpecifications Diameter: 38mm Lug to Lug: 46mm Thickness: 12mm Strap Width: 20mm
Futurist (7 listings)[24][25]20 mm4839mm, 10mm thickCrystal: Faceted sapphire with inner AR applied Lug to Lug: 48mm Lug width: 20mm
VERSA Reversible Single Time (2 listings)[26][27]22 mmnot printedreversible caseLug width: 22mm Case Material: 316L stainless steel Movement: Miyota 6T28
VERSA Reversible Dual Time (4 listings)[28][29]20 mmnot printedreversible caseLug width: 20mm Case Material: 316L stainless steel Movement: 2 x Ronda S
VARIO x RZE UltraHex trench (3 listings)[30][31]18 mm4537mm titaniumCrystal: 2mm double domed sapphire with inner AR applied Lug width: 18mm Lug to lug: 45mm

Every row above is the verbatim rail from a fresh pull of that product page at build time; the second citation on the family rows is the sibling check confirming every listing in the family prints the identical rail (all five NAVI Voyages, all nine 1918 Trenches in steel and brass, all three A-11S, all six Empire Tuxedo chronographs, all four Seasons GMT, all seven Futurists, both VERSA Single Times, all four VERSA Dual Times, all three x RZE titanium collabs). The dual-width strings are carried exactly as printed, parentheses and all, because the parentheses carry the case size. Nothing is converted, rounded or inferred.

The dual-width decoder: one rail, two case sizes, two straps

The reason a Vario chart needs exact strings and not single numbers: seven of the seventeen signatures print two widths, and they are not the same two sizes. The 1918 Trench and Pilot families pair 37mm cases with 18mm and 40mm cases with 20mm, lug-to-lug 45mm rising to 48mm [8][10]. The 1945 A-11S starts one size smaller: 35mm cases take 18mm with a 41mm lug-to-lug, 40mm cases take 20mm with 48mm [14]. The 1945 D12 goes one size larger: 18mm(37mm) or 20mm(41mm), lug-to-lug 45mm(37mm) or 49mm(41mm) [16]. So the same brand sells 18mm straps for 35mm, 37mm and 38mm-class watches and 20mm straps for 39mm, 40mm and 41mm-class watches, and the three dual families do not share a single rail. A review of the 37mm 1918 Trench grey dial confirms the pair from the wrist: the case measures 45mm lug-to-lug, 10mm thick, and comes with an 18mm lug width, with the note that the 40mm version has a L2L of 48mm and a lug width of 20mm [5]. And within the same family the single-size listings break the other way: the SG60 Merlion limited edition is 37mm-only and prints just Lug width: 18mm Lug to lug: 45mm [13], the D12 Shadow Grey and Bronze Fume are 37mm-only and print the same [17], while the brass 1918 Medic is 40mm-only and prints Lug width: 20mm Lug to lug: 48mm [11].

Strap Width versus Lug width: the Empire wording trap

The Empire family, fourteen of the 59 watches across Tuxedo chronographs, Art Nouveau limited editions and Seasons True GMT limited editions, never prints the words Lug width at all. Its specification block reads Specifications Diameter: 38mm Lug to Lug: 46mm Thickness: 11.5mm Strap Width: 20mm [19], with thickness the only number that moves across the three sub-families (11.5mm on the Tuxedo chronographs, 11mm on the Art Nouveau hand-wound, 12mm on the Seasons True GMT) [21][22]. The width is the same 20mm in every block. The brand's own accessory page closes the loop: the Metal Bracelet for All Empire Watches is a 20mm bracelet taper to 18mm butterfly clasp with quick release [32], sold explicitly for all Empire watches. A buyer who searches an Empire page for lug width finds nothing and concludes the size is unpublished; it is published, under a different label.

The spread: 22mm reversible, 18mm wire-lug trench, 18mm titanium collab

Three rows give the table real spread beyond the 18/20 mainstream. The VERSA Reversible Single Time prints Lug width: 22mm [26], the widest strap in the catalog, on a two-faced reversible case; the Dual Time on the same reversible platform prints Lug width: 20mm [28], so the reversible family splits by complication, not by case size, and neither VERSA rail prints a lug-to-lug at all. The 1918 wire-lug families run the other direction: the Trench and Pilot pages describe thicker wired lugs for added security [8], the historical trench-watch construction where the strap passes through soldered wire loops rather than spring bars, and every one of them lands on 18mm in the 37mm size. The VARIO x RZE UltraHex titanium collab prints the same 18mm with 45mm lug-to-lug across all three finishes [30][31], a 37mm titanium trench shared with the RZE brand charted separately on this site. The NAVI Voyage single-hander is the quiet outlier in the middle: a 38mm case, 11mm thick, printing Lug width: 20mm Lug to lug: 46mm on all five country editions [6][7].

Is there an official Vario band size chart?

No. The widths live in the Specifications block of each product page on vario.sg, in three wordings (Lug width on most families, Lug to Lug printed before Lug width on the Futurist, Strap Width on the Empire family), and no consolidated table exists anywhere on the store. watchbands.ai, the largest strap-size database, carried 205 brands at build time with no Vario entry [2]. The nearest incumbent is a lug-to-lug database whose Vario brand page holds exactly one watch of the 59 charted here: Vario has 1 watch in the database. It measures 48 mm lug-to-lug, alongside case diameters of 39 mm and thickness of 10 mm. Vario Futurist 39mm [4], which matches the Futurist rail on this page [24] and nothing else. Forum and review prose covers individual models; no third party tables the catalog. This page is that table.

The brand that sells the straps too

Vario's own fitting guide states the strap-side ceiling: Our watch straps fit thousands of watches with lug widths between 18mm and 24mm [3], which is the exact range this catalog's 18, 20 and 22mm widths sit inside. The same guide carries the odd-width advice that does not apply to any current Vario watch but governs the straps the brand sells: If your watch has an odd sized lugs (eg. 19mm,21mm,23mm) and you are interested in our graphic strap, buy 1mm smaller [3]. That is the purchase consequence of a width error here: the brand sells the straps, the watches and the bracelet, so a 20mm strap bought for a 37mm Trench is a return, not a rounding error. Of the 331 products in the catalog, 272 are straps, accessories, cases, pillows and apparel; the 59 watch listings above are the complete watch census as of the build date, with the limited editions (Empire Art Nouveau at 15 to 45 pieces, Seasons GMT at 60 to 90 pieces, the SG60 Merlion) noted as-of that date because the catalog churns with them.

How this catalog was counted

The vario.sg products.json endpoint enumerates 331 products across 2 pages on a fresh pull [1], re-diffed against the previous night's research pull: identical 331 titles, zero churn in the 15 hours between. The watch census was re-derived with the title filter that excludes the 272 strap, accessory, caseback, pillow, case, adapter and apparel SKUs; 59 watch listings remain, and all 59 product pages were fetched fresh at build time, every one printing its family signature verbatim in the served page text (the full sweep is recorded in the build workspace). The store serves US dollars with a currency toggle, and no price appears on this page because no price is a sizing spec. The 17 signature rails were checked byte-exact against the fresh catalog bytes before any row was published, and no width on this page was inferred from case size, strap SKU or sibling models: what prints is what you get, parentheses included.

Sources

  1. vario.sg products.json, fresh pull at build: 331 products across 2 pages (250 + 81); the catalog basis for every row on this page, re-diffed against the previous night's research pull: identical 331 titles, zero churn: vario.sg
  2. watchbands.ai brand index, fresh pull at build (205 root-relative /slug hrefs, legacy /brands/ pattern returns 0; controls seiko, citizen, rolex present by slug and text; no vario entry): watchbands.ai
  3. vario.sg fitting guide, fresh pull at build: Our watch straps fit thousands of watches with lug widths between 18mm and 24mm, and the odd-lug advice: If your watch has an odd sized lugs (eg. 19mm,21mm,23mm) and you are interested in our graphic strap, buy 1mm smaller: vario.sg
  4. lugtolugfinder.com Vario brand page, fresh pull at build: Vario has 1 watch in the database. It measures 48 mm lug-to-lug, alongside case diameters of 39 mm and thickness of 10 mm. Vario Futurist 39mm 48 mm. The nearest thing to an incumbent: a lug-to-lug database that carries exactly one of the 59 watches charted here: lugtolugfinder.com
  5. mainspring.watch 1918 Trench Grey 37mm review, fresh pull at build: the case measures 45mm lug-to-lug, 10mm thick, and comes with an 18mm lug width. (Note that the 40mm version has a L2L of 48mm and a lug width of 20mm.); third-party corroboration of the dual-width rail, cited as such: www.mainspring.watch
  6. vario.sg PDP: NAVI Voyage United Kingdom, fresh pull at build: Crystal: domed sapphire crystal with inner AR applied Lug width: 20mm Lug to lug: 46mm Case Material: 316L stainless: vario.sg
  7. vario.sg PDP: NAVI Voyage sibling check, fresh pull at build: all five NAVI Voyage listings (United Kingdom, Spain, Italy, Germany, France) print the identical Lug width: 20mm Lug to lug: 46mm rail: vario.sg
  8. vario.sg PDP: 1918 Trench Black Dial with White Lume (steel), fresh pull at build: Lug width: 18mm(37mm) or 20mm(40mm) Lug to lug: 45mm(37mm) or 48mm(40mm): vario.sg
  9. vario.sg PDP: 1918 Trench sibling check, fresh pull at build: all nine 1918 Trench listings in both steel and brass print the identical dual-width rail; Case diameter: 37mm or 40mm: vario.sg
  10. vario.sg PDP: 1918 Pilot White Dial, fresh pull at build: Lug width: 18mm (37mm) or 20mm (40mm) Lug to lug: 45mm (37mm) or 48mm (40mm), note the spaces inside the parentheses, a different print from the Trench family: vario.sg
  11. vario.sg PDP: 1918 Medic Brass Cream Dial, fresh pull at build: Lug width: 20mm Lug to lug: 48mm Lume: C3 Lume Case Material: Brass; the only 1918-family watch on a single 20mm width: vario.sg
  12. vario.sg PDP: 1918 Merlion Trench, fresh pull at build: Lug width: 18mm(37mm) or 20mm(40mm) Lug to lug: 45mm(37mm) or 48mm(40mm): vario.sg
  13. vario.sg PDP: 1918 SG60 Merlion Trench Limited Edition, fresh pull at build: Lug width: 18mm Lug to lug: 45mm; a 37mm-only limited edition, so a single width: vario.sg
  14. vario.sg PDP: 1945 A-11S Solar Quartz Raven Black, fresh pull at build: Lug width: 18mm(35mm) or 20mm(40mm) Lug to lug: 41mm(35mm) or 48mm(40mm); the only family whose small size is 35mm: vario.sg
  15. vario.sg PDP: A-11S sibling check, fresh pull at build: all three A-11S listings (Raven Black, Heron White, Eagle Grey) print the identical 18mm(35mm) or 20mm(40mm) rail: vario.sg
  16. vario.sg PDP: 1945 D12 Sand Beige, fresh pull at build: Lug width: 18mm(37mm) or 20mm(41mm) Lug to lug: 45mm(37mm) or 49mm(41mm); note the 41mm large size, not the Trench's 40mm: vario.sg
  17. vario.sg PDP: 1945 D12 Shadow Grey, fresh pull at build: Lug width: 18mm Lug to lug: 45mm; a 37mm-only listing, so a single width: vario.sg
  18. vario.sg PDP: 1945 D12 Bronze Fume Grey, fresh pull at build: Lug width: 18mm Lug to lug: 45mm; the bronze variant is also 37mm-only: vario.sg
  19. vario.sg PDP: Empire Black Tuxedo Tachymetre MecaQuartz Chronograph, fresh pull at build: Specifications Diameter: 38mm Lug to Lug: 46mm Thickness: 11.5mm Strap Width: 20mm; the Empire family prints Strap Width, not Lug width: vario.sg
  20. vario.sg PDP: Empire Tuxedo sibling check, fresh pull at build: all six Empire Tuxedo chrono listings print the identical Diameter: 38mm Lug to Lug: 46mm Thickness: 11.5mm Strap Width: 20mm block: vario.sg
  21. vario.sg PDP: Empire Art Nouveau Outer Black Handwound, fresh pull at build: Limited Edition of 20 pieces Specifications Diameter: 38mm Lug to Lug: 46mm Thickness: 11mm Strap Width: 20mm: vario.sg
  22. vario.sg PDP: Empire Seasons True GMT Summer Blue, fresh pull at build: Limited Edition of 60 pieces Specifications Diameter: 38mm Lug to Lug: 46mm Thickness: 12mm Strap Width: 20mm Movement: Miyota 9075: vario.sg
  23. vario.sg PDP: Seasons GMT sibling check, fresh pull at build: all four Seasons True GMT listings print the identical Diameter: 38mm Lug to Lug: 46mm Thickness: 12mm Strap Width: 20mm block; the limited-edition counts differ (60, 60, 90, 90), the dimensions do not: vario.sg
  24. vario.sg PDP: Futurist Sunburst Purple Fume, fresh pull at build: Crystal: Faceted sapphire with inner AR applied Lug to Lug: 48mm Lug width: 20mm; note this family prints Lug to Lug before Lug width: vario.sg
  25. vario.sg PDP: Futurist sibling check, fresh pull at build: all seven Futurist listings print the identical Lug to Lug: 48mm Lug width: 20mm rail: vario.sg
  26. vario.sg PDP: VERSA Reversible Single Time White Tuxedo Automatic, fresh pull at build: Lug width: 22mm Case Material: 316L stainless steel Movement: Miyota 6T28; the widest strap Vario sells a watch on: vario.sg
  27. vario.sg PDP: VERSA Single Time sibling check, fresh pull at build: both Single Time listings print the identical Lug width: 22mm rail: vario.sg
  28. vario.sg PDP: VERSA Reversible Dual Time Silver-Black MoP Quartz, fresh pull at build: Lug width: 20mm Case Material: 316L stainless steel Movement: 2 x Ronda S: vario.sg
  29. vario.sg PDP: VERSA Dual Time sibling check, fresh pull at build: all four Dual Time listings (2 MoP, 2 Enamel) print the identical Lug width: 20mm rail: vario.sg
  30. vario.sg PDP: VARIO x RZE UltraHex Titanium Trench Medallion Yellow, fresh pull at build: Crystal: 2mm double domed sapphire with inner AR applied Lug width: 18mm Lug to lug: 45mm: vario.sg
  31. vario.sg PDP: x RZE sibling check, fresh pull at build: all three UltraHex titanium collab listings (Medallion Yellow, Lumed Carbon Fibre, Timascus) print the identical Lug width: 18mm Lug to lug: 45mm rail: vario.sg
  32. vario.sg PDP: Metal Bracelet for All Empire Watches, fresh pull at build: 20mm bracelet taper to 18mm butterfly clasp with quick release solid endlinks and half links for perfect fit; the brand's own bracelet for the Empire family, confirming the 20mm lug width from the accessory side: vario.sg