Widths differ across this line. Enter or pick your exact reference to get its width.
18 to 22 mm
Verification: Listed by the maker for ref. IW3878‑05, IW378001 and 6 more
Attachment: spring bars
36 to 46 mm cases · 1994 to 2024
Official page: IWC
Report an errorIndicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.
The story · Since 1988
In 1992 IWC engineers turned a Valjoux base into a double chronograph in a few weeks, and two years later a plain 39 mm Fliegerchronograph followed and stayed in production until 2005. Its ceramic twin, about a thousand pieces, was forgotten for 25 years before collectors made it a cult object.
999
ceramic Pilot's Chronographs ref. 3705 made, per IWC's 85-year history
Worn by
IWC had no true pilot's chronograph until 1988, when it launched the Mecaquartz reference IW3741. In 1992 its engineers built the Doppelchronograph IW3711 on a Valjoux base in a few weeks, a watch that could time two intervals at once and gave IWC its name for robust chronographs.
In 1994 IWC presented its first mechanical pilot's chronograph, reference 3706 in steel, alongside reference 3705 in matte black zirconium oxide ceramic. The steel 3706 measured 39 mm, ran on Valjoux 7750 based calibres and stayed in the catalogue until 2005.
In 2007 IWC put a double chronograph in black ceramic and named it after the US Navy Fighter Weapons School, starting the TOP GUN family. In 2012 the standard steel chronograph grew by 1 mm to 43 mm and gained an altimeter-style triple date window and a new steel bracelet with fine adjustment.
In 2016 the 43 mm chronograph returned to a single date window. For 2019 IWC fitted its own column-wheel calibre 69380 to the pilot's chronograph for the first time, in the 41 mm Spitfire models in steel and bronze and in 44.5 mm ceramic TOP GUN models.
In April 2021 the Chronograph 41 brought the in-house 69385 calibre, 100 m water resistance and the EasX-CHANGE strap system to the core model; the 43 mm version followed in 2022. Performance Chronograph models for the Mercedes-AMG partnership arrived in 2023, the film F1 put one on the wrist of Damson Idris' character Joshua Pearce in 2025, and in 2026 driver George Russell co-designed an edition.
At a Friday press conference at the 2022 Miami Grand Prix he wore three IWC watches, among them the new Pilot's Watch Chronograph 41 Mercedes-AMG Petronas team edition. IWC's 2023 campaign shows him wearing the Performance Chronograph 41 IW388306.
Off screen: Time and Tide reports the actor has often been seen in a black-dial 43 mm Pilot's Watch Chronograph on a black calfskin strap.
Film role: as Joshua Pearce, the young APXGP driver in F1 (2025), he wears the Pilot's Watch Performance Chronograph 41 IW388309 in 18-carat 5N gold. This is a costume choice, not personal ownership.
2026. On 5 February 2026 IWC unveiled the Pilot's Watch Chronograph 41 George Russell IW389411, co-designed with the Mercedes driver: a 41.9 mm black ceramic case, dial printing in the blue of his helmet, the 69380 calibre and his number 63 engraved on the back.
2025. IWC is a sponsor of APXGP, the fictional team in F1 (2025). Damson Idris's character Joshua Pearce wears the gold Performance Chronograph 41 IW388309, and IWC added APXGP-inspired chronographs to the line at Watches and Wonders on 1 April 2025.
2022. At a Friday press conference at the first Miami Grand Prix in May 2022, Lewis Hamilton arrived wearing three IWC watches, the new Chronograph 41 Mercedes-AMG team edition among them, as part of his protest against the FIA's proposed jewellery ban.
2022. The recruits in Top Gun: Maverick wear IWC's Strike Fighter Tactics Instructor watches, among them the Pilot's Watch Chronograph IW389004, a ceramic model sold only to TOPGUN graduates in real life. Monochrome identifies them on Lewis Pullman, Miles Teller and Monica Barbaro without saying which actor wears which model.
2021. IWC says the ceramic 3705 sold poorly and was dropped after about a thousand pieces, then turned cult among collectors; one from former IWC head Gunter Blumlein's collection sold at auction for US$53,750. In 2021 IWC answered with the Tribute to 3705 IW387905, 1,000 pieces in a 41 mm Ceratanium case.
Titanium and Ceratanium chronographs with tachymeter scales, made for IWC's partners Mercedes-AMG and the Mercedes-AMG PETRONAS Formula One Team.
The 43 mm model received the 69385 calibre, a thinner 14.8 mm case, 100 m water resistance and a sapphire back, with black, blue or green dials.
Monochrome reports 21 mm calfskin straps fitted with EasX-CHANGE.
The core steel model shrank 2 mm to 41 mm and 14.5 mm thick, gained the in-house 69385 calibre with a sapphire back and 100 m water resistance, in blue or green.
20 mm strap width; EasX-CHANGE lets the strap or bracelet be swapped without tools.
The first pilot's chronograph with a movement from IWC's 69000 family, in a case reduced to 41 mm, in steel with a black dial (IW387901) or bronze with an olive green dial (IW387902).
IWC lists a 20 mm strap width for both IW387901 and IW387902.
A 44.5 mm ceramic chronograph with the 69380 calibre and a soft-iron inner case, made in black and, from 2019, sand (Mojave Desert) ceramic, joined in 2022 by white (Lake Tahoe) and green (Woodland).
IWC lists a 21 mm strap width on IW389101, IW389103 and IW389105.
The steel chronograph grew from 42 to 43 mm, took a vertical triple date like an altimeter and kept the 79320 calibre; a new bracelet with fine adjustment clasp was offered.
IWC lists a 21 mm strap width and 43 mm diameter for IW377709.
The Double Chronograph Edition TOP GUN combined a split-seconds chronograph with a black zirconium oxide ceramic case, chosen because it does not reflect sunlight into a cockpit.
IWC's first pilot's chronograph, with a hybrid quartz and mechanical movement; the maker calls it the start of a renaissance of pilot's watches.
IWC Pilot Chronograph references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.
Pilot Chronograph “Flieger” IW3705 Ceramic
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 39 mmYear: 1994Black dialCase material: Ceramic
Pilot Chronograph IW3706
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 39 mmYear: 1994Black dialCase material: Steel
Pilot Chronograph IW3777 Black
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmYear: 2012Black dialCase material: Steel
Pilot Chronograph Black
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmYear: 2016Black dialCase material: Steel
Pilot Chronograph IW3777 Blue
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmYear: 2016Blue dialCase material: Steel
Pilot Chronograph Spitfire Bronze
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 41 mmYear: 2019Green dialCase material: Bronze
Pilot Chronograph Spitfire Steel
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 41 mmYear: 2019Black dialCase material: Steel
Pilot Chronograph Top Gun Ceramic
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmYear: 2019Black dialCase material: Ceramic
Pilot Chronograph Top Gun Mojave
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmYear: 2019Beige dialCase material: Ceramic
Pilot Chronograph Blue
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 41 mmYear: 2021Blue dialCase material: Steel
Pilot Chronograph Top Gun Lake Tahoe
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmYear: 2022White dialCase material: Ceramic
Pilot Chronograph Pilot's Watch Chronograph TOP GUN Edition “Woodland”
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmYear: 2022Green dialCase material: Green Ceramic
Pilot Chronograph White Panda
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 41 mmYear: 2024White/Black Panda dialCase material: Steel
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmWhite dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 42 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmGreen dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 18 mm
Source: Not yet verified Attachment: Spring barsCase size: 36 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 18 mm
Source: Not yet verified Attachment: Spring barsCase size: 36 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlue / Navy dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmGreen dial
Pilot Chronograph Pilot's
Lug width: 22 mm
Source: Not yet verified Attachment: Spring barsCase size: 46 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Maker Attachment: Spring barsBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 22 mm
Source: Not yet verified Attachment: Spring barsCase size: 46 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 22 mm
Source: Not yet verified Attachment: Spring barsCase size: 46 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44.5 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44.5 mmBlue / Navy dial
Pilot Chronograph Pilot’s
Lug width: 22 mm
Source: Not yet verified Attachment: Spring barsCase size: 44 mmBlack dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmGrey dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 43 mmBrown dial
Pilot Chronograph Pilot's
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44.5 mmBlack dial
Lug width: 20 mm
Source: Not yet verified Attachment: Spring barsCase size: 41 mmBlue / Navy dial
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 41 41mm
Lug width: 20 mm
Source: Maker Attachment: Spring barsCase size: 41 mmGreen dialCase material: Stainless steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 41 41mm
Lug width: 20 mm
Source: Maker Attachment: Spring barsCase size: 41 mmBlue dialCase material: Bronze
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 41 41mm Steel Green Dial
Lug width: 20 mm
Source: Two sources Attachment: Spring barsCase size: 41 mmBlue dialCase material: Stainless Steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 41 Edition "Mercedes -
Lug width: 20 mm
Source: Maker Attachment: Spring barsCase size: 41 mmBlack dialCase material: Titanium
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 41 Le Petit Prince 41mm
Lug width: 20 mm
Source: Maker Attachment: Spring barsCase size: 41.9 mmBlue dialCase material: Ceramic
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 43mm
Lug width: 21 mm
Source: Maker Attachment: Spring barsCase size: 43 mmBlack dialCase material: Stainless steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 43mm
Lug width: 21 mm
Source: Maker Attachment: Spring barsCase size: 43 mmGreen dialCase material: Stainless steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 43mm Steel Blue Dial
Lug width: 21 mm
Source: Two sources Attachment: Spring barsCase size: 43 mmBlue dialCase material: Stainless Steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph 43mm Steel Green Dial
Lug width: 21 mm
Source: Two sources Attachment: Spring barsCase size: 43 mmGreen dialCase material: Stainless steel
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph Edition "Tophatters" 44.5mm
Lug width: 21 mm
Source: Not yet verified Attachment: Spring barsCase size: 44.5 mmBlack dialCase material: Ceramic
Pilot Chronograph Schaffhausen Pilot's Watch Chronograph Le Petit Prince 43mm Steel
Lug width: 21 mm
Source: Maker Attachment: Spring barsCase size: 43 mmBlue dialCase material: Stainless steel
Pilot Chronograph Schaffhausen Pilot's Watch Performance Chronograph 41
Lug width: 20 mm
Source: Two sources Attachment: Spring barsCase size: 42.5 mmBlack dialCase material: Titanium
No reference matches.
IWC Pilot Chronograph references use 20 mm or 21 mm or 22 mm depending on the reference and case size, so check yours in the list below. The most common is 21 mm (48 of 66 references with a known width). The IWC Pilot Chronograph ref. IW388103, IW388109 and 2 more take 20 mm (listed by the maker). The IWC Pilot Chronograph ref. IW3878-05, IW378001 and 2 more take 21 mm (listed by the maker).
No. 4 different lug widths appear across the line, often by case size or generation. Check the reference engraved on the case back or between the lugs.
20 mm. IWC lists a 20 mm strap width and 18 mm buckle for the 41 mm models, both the Chronograph 41 and the Spitfire chronograph.
21 mm. IWC lists 21 mm for the 43 mm IW3777 generation, and Monochrome gives 21 mm for the 2022 Chronograph 43 straps.
21 mm, an uncommon size, as IWC lists on the black, Mojave Desert and Lake Tahoe ceramic models.
On the 41 mm models from 2021 and the 43 mm models from 2022, yes: the EasX-CHANGE system releases the strap or bracelet at the push of a lever, and IWC sells calfskin, rubber and steel options.
Both have a 39 mm case and a 20 mm lug width.
The 2021 bracelet has a fine adjustment system and a slimmer shape than before, and the clasp ratchets for micro-adjustment of a few millimetres.
The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.
Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.