L2.836.4.52.2
Ultra Chron
Lug width: 22 mm
Source: DatabaseCase size: 43 mmBlack dialCase material: Stainless steel and sapphire
- Attachment
- classic lugs
- Status
- Listed in our database, not yet verified
Longines Ultra Chron
The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.
19 to 22 mm
Verification: Two sources agree on ref. L2.937.4.72.6
37 to 43 mm cases
Filter references by lug width
Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.
Collection5 references
5 Longines Ultra Chron references
Lug width
Case size
Longines Ultra Chron 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.
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L2.836.4.52.8
Ultra Chron
Lug width: 22 mm
Source: DatabaseCase size: 43 mmBlack dialCase material: Stainless steel
- Attachment
- classic lugs
- Status
- Listed in our database, not yet verified
-
L2.537.4.72.6
Ultra-Chron Classic
Lug width: 19 mm
Source: DatabaseCase size: 37 mmSunray silver dialCase material: Stainless steel
- Attachment
- classic lugs
- Status
- Listed in our database, not yet verified
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L2.937.4.72.2
Ultra-Chron Classic
Lug width: 21 mm
Source: DatabaseCase size: 40 mmSunray silver dialCase material: Stainless steel
- Attachment
- classic lugs
- Status
- Listed in our database, not yet verified
-
L2.937.4.72.6
Ultra-Chron Classic
Lug width: 21 mm
Source: Two sourcesCase size: 40 mmSunray silver dialCase material: Stainless steel
- Attachment
- classic lugs
- Status
- Two sources agree
No reference matches.
FAQ
What lug width does the Longines Ultra Chron use?
Longines Ultra Chron lug width: 19 to 22 mm depending on the reference. The most common is 21 mm (2 of the 5 references with a listed width in our database). Find your exact reference in the table below. The Longines Ultra Chron ref. L2.937.4.72.6 takes 21 mm (two independent sources agree).
Do all Longines Ultra Chron references take the same strap?
No. 3 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.
Where do these Longines Ultra Chron lug widths come from?
From our database, which lists 5 Longines Ultra Chron references, 5 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.
Other Longines collections
- Avigation19 to 25 mm
- Bellearti10 to 17 mm
- Clous De Paris20 to 22 mm
- Conquest Heritage18 to 20 mm
- Dolce Vita11 to 26 mm
- Lindbergh20 to 25 mm
- Lindberghs Atlantic Voyage25 mm
- Master15 to 21 mm
- Mini8 mm
- Olympic Collection21 mm
- Saint Imier Collection12 to 22 mm
- Symphonette4 to 11 mm
Help
What is lug width?
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.
Measure it in 30 seconds
- Take the strap off, or look at the back of it: many straps print their width.
- Measure the inside gap between the lugs with a caliper or a millimetre ruler.
- Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.
Strap, quick release or system?
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.