Essence 39mm Automatic COSC (Blue)

Ref. 0339.1.6631

Case diameter: 39 mm; Manufacturer spec
Lug-to-lug: 45.5 mm; Manufacturer spec
Thickness: 10.5 mm; Manufacturer spec
Lug width: 20 mm; Manufacturer spec

Retail price $1,980 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 45.5 mm

How the Essence 39mm Automatic COSC (Blue) wears

Its lugs add 6.5 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 7.5" (16.5–19.1 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 10.5 mm thick it is slimmer than 75% of the 101 other everyday 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 Essence 39mm Automatic COSC (Blue) fit your wrist?

With a 45.5 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	Snug, lugs near the edge
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: 0339.1.6631
Collection: Essence
Status: In production
Introduced: 2026
Case material: stainless steel
Crystal: flat sapphire, interior AR
Water resistance: 100 m
Bezel: fixed
Dial: blue
Strap / bracelet: stainless steel bracelet with micro-adjust folding clasp
Style: Everyday, Sport

Movement

Caliber: Sellita SW200-2
Type: automatic
Power reserve: 65 hours
Jewels: 26

2 other watches use the Sellita SW200-2

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

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 Essence 39mm Automatic COSC (Blue).