The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.
20 or 21 mm
Verification: From our database, not yet verified
36 to 40.2 mm cases · 2016 to 2022
Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.
The story · Since 1938
Patek Philippe's first split-seconds wrist chronograph, made in 1923 as a special commission, already had a second sweep hand that could stop and catch up. Twenty-five years later Duke Ellington walked into the Geneva salon and bought a ref. 1563 rattrapante, one of only three known, which now sits in the Patek Philippe Museum.
3
known examples of the ref. 1563
Worn by
The ref. 1436 of around 1938 was the first split-seconds chronograph Patek produced in series, housed in what is essentially the ref. 130 case. The ref. 1563 added the split-seconds to the water-resistant case of the ref. 1463, with round pushers and a screwed back; only three are known.
In 2005 Patek introduced the CHR 27-525 PS, its first chronograph movement designed and built entirely in-house, and at 5.25 mm the thinnest column-wheel split-seconds of its day. It first appeared in the 33 mm ref. 5959, modelled on the 1923 watch, then in 2010 in the steel cushion ref. 5950A and the perpetual calendar ref. 5951P.
The ref. 5204 of 2012 replaced the 5004 with the in-house CHR 29-535 PS Q, whose new isolator and alignment device cut deviation between the two sweep hands by 75 percent. In 2015 the ref. 5370P used the same base without the calendar, in a 41 mm platinum case with a black Grand Feu enamel dial.
In 2025 the 5370 came in rose gold with a brown and beige enamel dial and a new triple-blade fold-over clasp. The same year the ref. 5308G combined a minute repeater, a split-seconds monopusher chronograph and an instantaneous perpetual calendar in one self-winding watch.
The watch industry executive owned the ref. 1563 with a two-tone pulsation dial, movement 862'420, which Christie's sold from his private collection.
Clapton commissioned a series of special-order ref. 5004 split-seconds perpetual calendars; a white gold one with a rose dial and a platinum one with a blue dial have both been sold by Phillips.
After Segrave's death the watch went back to Selfridge, who gave it to Earhart in exchange for her Longines; the auction house says photographs show her wearing it, though she was not wearing it on her last flight.
2026. Phillips sold Eric Clapton's white gold ref. 5004G-020 with rose dial at its New York Watch Auction XIV for USD 5,202,000, against an estimate of USD 700,000 to 1,400,000.
2013. The ref. 1563 with case no. 657'132 sold at Christie's on 11 November 2013 for nearly CHF 1.5 million.
2002. On 13 May 2002 Phillips, de Pury & Luxembourg sold the same watch in Geneva for 2.5 million Swiss francs, almost twice its estimate; the room applauded when a Swiss private museum won it. It is now shown in the Patek Philippe Museum.
1998. Antiquorum offered Duke Ellington's ref. 1563 as lot 135 in New York on 20 June 1998, estimated USD 150,000 to 180,000; it sold for USD 673,500.
Rose gold 5370 with brown Grand Feu and beige champleve enamel dial.
41 mm; dark chestnut alligator strap with the patented triple-blade fold-over clasp.
White gold 5204 with an olive green sunburst dial.
40 mm case on an olive green calfskin strap with a white gold fold-over clasp.
Pure split-seconds on the CHR 29-535 PS, black enamel dial with white gold Breguet numerals.
41 mm by 13.56 mm, white gold cabochons on the lug tips, black alligator strap with fold-over clasp.
Split-seconds perpetual calendar on the in-house CHR 29-535 PS Q, replacing the 5004.
40 mm round platinum case.
The CHR 27-525 PS in a steel cushion-shaped case water-resistant to 30 metres.
Monopusher split-seconds in a 33 mm officer-style platinum case, first watch with the in-house CHR 27-525 PS.
33 mm case with screw-set lugs.
First serially produced Patek perpetual calendar chronograph with split-seconds, on the CHR 27-70 Q calibre.
Phillips lists the case at 36.5 mm, Delugs at 36.7 mm with 20 mm lugs; sold on crocodile straps with a deployant clasp.
Split-seconds in the water-resistant ref. 1463 style case with round pushers; Duke Ellington's example was made in 1946.
35 mm case; the Christie's example came on a strap with an 18K gold Patek Philippe buckle.
First serially produced Patek split-seconds wristwatch, made over three decades on a 13-ligne movement derived from the 13-130.
Patek Philippe Split-Seconds 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.
Split-Seconds Chronograph 5204R Brown
Lug width: 20 mm
Source: DatabaseCase size: 40 mmYear: 2016Brown dialCase material: Rose Gold
Split-Seconds Chronograph 5204G Blue
Lug width: 20 mm
Source: DatabaseCase size: 40 mmYear: 2022Blue dialCase material: White Gold
Split-Seconds Chronograph
Lug width: 18 mm
Source: DatabaseCase size: 37 mmSilver dialCase material: Yellow Gold
Split-Seconds Chronograph
Lug width: 19 mm
Source: DatabaseCase size: 36 mmWhite dialCase material: Yellow Gold
Split-Seconds Chronograph
Lug width: 19 mm
Source: DatabaseCase size: 36 mmSilver dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 19 mm
Source: DatabaseCase size: 36 mmPink dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 36 mmBlack dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 19 mm
Source: DatabaseCase size: 36 mmGrey dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 36.7 mmSilver dialCase material: Stainless Steel
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 36.7 mmBlue dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 19 mm
Source: DatabaseCase size: 36.7 mmBlack dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 36.7 mmBlue dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 18 mm
Source: DatabaseCase size: 39.5 mmWhite dialCase material: Yellow Gold
Split-Seconds Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 37.2 mmSilver dialCase material: Yellow Gold
Split-Seconds Chronograph
Lug width: 18 mm
Source: DatabaseCase size: 42 mmBlack dialCase material: Rose Gold
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 37.2 mmSilver dialCase material: Rose Gold
Split-Seconds Chronograph
Lug width: 22 mm
Source: DatabaseCase size: 41 mmBlack dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 22 mm
Source: DatabaseCase size: 41 mmBlue dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 38.3 mmRose dialCase material: Platinum
Split-Seconds Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 38 mmSilver dialCase material: Titanium
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 40.2 mmMulti-Color dialCase material: Rose Gold
Split-Seconds Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 37 mmMulti-Color dialCase material: White Gold
Split-Seconds Chronograph
Lug width: 22 mm
Source: DatabaseCase size: 44 mmBlack dialCase material: White Gold
No reference matches.
Patek Philippe Split-Seconds Chronograph references use 19 mm or 20 mm or 21 mm depending on the reference and case size, so check yours in the list below. The most common is 20 mm (6 of 23 references with a known width). These widths come from our database and are not yet verified.
No. 5 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.
A fold-over clasp in the case metal: white gold on the 5204G, platinum on the 5373P, and on the rose gold 5370R a new patented triple-blade fold-over clasp.
Its crown and chronograph pusher sit at 9 o'clock and the split-seconds pusher at 8 o'clock, with the dial turned 180 degrees; Patek makes it for left-handers. It comes on a black calfskin strap with a fabric pattern.
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.