Spirit Zulu Time 39mm

Ref. L3.802.4.63.6

Case diameter: 39 mm; Measured in a published review
Lug-to-lug: 47 mm; Measured in a published review
Thickness: 13.5 mm; Measured in a published review
Lug width: 21 mm; Measured in a published review

Retail price $3,150 (US, Oct 2026)

Your wristIdeal fit

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

How the Spirit Zulu Time 39mm wears

Its lugs add 8 mm to the 39 mm case, close to the 7.1 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 13.5 mm thick it is thicker than 71% of the 24 other gmt watches we've measured, so expect it to sit tall on the wrist.

Its 21 mm lug width is one of the most common strap sizes; 28 other watches here share it, so aftermarket straps are easy to find.

Will the Spirit Zulu Time 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.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Lugs overhang
6.5"	51.2 mm	Ideal fit
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Wears small

Specifications

Reference: L3.802.4.63.6
Collection: Spirit Zulu Time
Status: In production
Introduced: 2023
Case material: stainless steel
Crystal: sapphire
Water resistance: 100 m
Bezel: bidirectional rotating 24-hour bezel, green ceramic insert
Dial: anthracite
Strap / bracelet: stainless steel bracelet
Style: GMT, Pilot

Movement

Caliber: ETA (Longines) L844.4
Type: automatic
Power reserve: 72 hours
Accuracy: COSC chronometer

Takes 21 mm straps. See other 21 mm watches and straps.

Watches that wear the same size

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

Same 21 mm lug width

All 21 mm watches

These take the same straps as the Spirit Zulu Time 39mm.