Longines Legend Diver

Most Longines Legend Diver references take a 22 mm watch strap: 17 of 36. The lug width follows the case size: 36 mm case → 19 mm, 39 mm case → 20 mm and 42 mm case → 22 mm.

Shop 19 mm Shop 20 mm Shop 22 mm

Longines Legend Diver lug width by case size

36 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
36 mm	19 mm	9	—	L3.374.4.30.2, L3.374.4.40.2, L3.374.4.50.0
39 mm	20 mm	10	—	L3.764.4.06.6, L3.764.4.16.6, L3.764.4.50.0
42 mm	22 mm	17	—	L3.674.4.50.0, L3.674.4.50.9, L3.674.4.56.2

Questions about the Longines Legend Diver

Do all Longines Legend Diver case sizes take the same watch strap?

No. The lug width changes with the case size: the 36 mm case takes 19 mm, the 39 mm case takes 20 mm and the 42 mm case takes 22 mm. Check your case diameter before you buy.