Longines Equestrian

Most Longines Equestrian references take a 10 mm watch strap: 17 of 59. The lug width follows the case size: 23 mm case → 10 mm, 24 mm case → 10 mm, 27 mm case → 12 mm and 30 mm case → 14 mm.

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Longines Equestrian lug width by case size

59 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
23 mm	10 mm	8	—	L6.135.0.57.0, L6.135.0.71.2, L6.135.0.73.2
24 mm	10 mm	9	—	L6.129.0.57.0, L6.129.0.71.2, L6.129.0.73.2
26 mm	12 mm	8	—	L6.136.0.57.0, L6.136.0.71.2, L6.136.0.73.2
27 mm	12 mm	9	—	L6.130.0.57.0, L6.130.0.71.2, L6.130.0.73.2
30 mm	14 mm	17	—	L6.131.0.57.0, L6.131.0.71.2, L6.131.0.73.2
34 mm	16 mm	8	—	L6.138.0.57.0, L6.138.0.71.2, L6.138.0.73.2

Questions about the Longines Equestrian

Do all Longines Equestrian case sizes take the same watch strap?

No. The lug width changes with the case size: the 23 mm case takes 10 mm, the 24 mm case takes 10 mm, the 26 mm case takes 12 mm, the 27 mm case takes 12 mm and the 30 mm case takes 14 mm. Check your case diameter before you buy.