Blancpain x Swatch Bioceramic Scuba Fifty Fathoms Atlantic Ocean

Ref. SO35A100 · “Scuba Fifty Fathoms”

Case diameter: 42.3 mm; Manufacturer spec
Lug-to-lug: 48 mm; Manufacturer spec
Thickness: 14.4 mm; Manufacturer spec
Lug width: 22 mm; Measured in a published review

Retail price $445 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 48 mm

How the Blancpain x Swatch Bioceramic Scuba Fifty Fathoms Atlantic Ocean wears

Its lugs add 5.7 mm to the 42.3 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 6.75" to 8" (17.1–20.3 cm); below 6.75" the lugs start to reach the edge of the wrist.

At 14.4 mm thick it is thicker than 86% of the 124 other dive watches we've measured, so expect it to sit tall on the wrist.

Its 22 mm lug width is one of the most common strap sizes; 42 other watches here share it, so aftermarket straps are easy to find.

Will the Blancpain x Swatch Bioceramic Scuba Fifty Fathoms Atlantic Ocean fit your wrist?

With a 48 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	Snug, lugs near the edge
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Ideal fit

Specifications

Reference: SO35A100
Collection: Scuba Fifty Fathoms
Status: In production
Case material: Bioceramic
Crystal: bio-sourced plastic (anti-scratch coating)
Water resistance: 91 m
Bezel: unidirectional Bioceramic bezel
Dial: blue gradient
Strap / bracelet: NATO strap from recycled fishing nets, Bioceramic buckle
Style: Dive, Sport

Movement

Caliber: Swatch Sistem51
Type: automatic
Power reserve: 90 hours
Frequency: 21,600 vph (3 Hz)
Jewels: 19

Takes 22 mm straps. See other 22 mm watches and straps.

Watches that wear the same size

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

Same 22 mm lug width

All 22 mm watches

These take the same straps as the Blancpain x Swatch Bioceramic Scuba Fifty Fathoms Atlantic Ocean.