Longines Admiral

Most Longines Admiral references take a 21 mm watch strap: 23 of 30.

Shop 20 mm Shop 21 mm Shop 22 mm

Longines Admiral lug width by case size

30 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
42 mm	21 mm · 20 mm on 6 · 22 mm on 1	30	—	L3.666.4.56.2, L3.666.4.56.3, L3.666.4.56.6

References that take a different watch strap

L3.668.4.56.0: 20 mm, not the 21 mm of most 42 mm cases
L3.668.4.56.3: 22 mm, not the 21 mm of most 42 mm cases
L3.668.4.66.2: 20 mm, not the 21 mm of most 42 mm cases
L3.668.4.76.3: 20 mm, not the 21 mm of most 42 mm cases
L3.668.4.76.6: 20 mm, not the 21 mm of most 42 mm cases
L3.668.4.79.6: 20 mm, not the 21 mm of most 42 mm cases
L3.669.4.56.7: 20 mm, not the 21 mm of most 42 mm cases

Questions about the Longines Admiral

Can two Longines Admiral watches with a 42 mm case take different watch straps?

Yes. Of the 30 Longines Admiral references with a 42 mm case, 23 take 21 mm, 6 take 20 mm and 1 take 22 mm. The reference number decides, not the case size alone.

Every Longines Admiral reference

Other Longines families

Inside each one the lug width often changes: it is the reference that decides.

All Longines families → · Why the size changes inside a family →