Watch Almanac
Longines

Legend Diver 39mm

Ref. L3.764.4.06.6

Case diameter
39 mm
Manufacturer spec
Lug-to-lug
47 mm
Measured in a published review
Thickness
12.7 mm
Measured in a published review
Lug width
20 mm
Measured in a published review

Retail price $3,850 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 47 mm

How the Legend Diver 39mm wears

Its lugs add 8 mm to the 39 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 12.7 mm thick it is slimmer than 60% of the 124 other dive watches we've measured, so it slides under a cuff more easily than most.

Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.

Will the Legend Diver 39mm fit your wrist?

With a 47 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmWears small

Specifications

Reference
L3.764.4.06.6
Collection
Legend Diver
Status
In production
Introduced
2023
Case material
stainless steel
Crystal
sapphire
Water resistance
300 m
Bezel
internal rotating diving flange (crown at 2)
Dial
green lacquered
Strap / bracelet
steel bracelet, double security folding clasp with micro-adjustment
Style
Dive

Movement

Caliber
Longines L888.6
Type
automatic
Power reserve
72 hours
Frequency
25,200 vph (3.5 Hz)

Takes 20 mm straps. See other 20 mm watches and straps.

More Legend Diver references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Legend Diver 39mm.

Sources