Breitling · Superocean and Avenger

Breitling A17375211B1S1 vs Breitling A32320101B1X1

12 published specifications differ between these two, and 6 are identical. Every figure below is what the manufacturer states for that reference; nothing is inferred from the other watch.

What differs

Specification	Breitling Superocean Automatic 42, black dial, rubber strapA17375211B1S1	Breitling Avenger Automatic GMT 44, black dial, calfskin strapA32320101B1X1
Case	Stainless steel, 42 mm	Stainless steel, 44 mm
Diameter	42 mm	44 mm
Thickness	12.56 mm	12.05 mm
Lug width	22 mm	22.05 mm
Bezel	Unidirectional, ratcheted	Rotating pinion bezel with 24-timezone indication
Bracelet	Rubber strap, black, straight, 22/18 mm	Calfskin leather strap, anthracite, straight, 22/20 mm
Clasp	Stainless steel folding clasp, 18 mm	Stainless steel folding clasp, 20 mm
Calibre	Breitling 17	Breitling 32
Movement	Self-winding mechanical	Self-winding mechanical, 2nd timezone (24 hr)
Power reserve	Approximately 38 hours	Approximately 42 hours
Jewels	26	25
Movement notes	No chronograph or calendar complication is listed for this reference.	Calendar shown in a dial aperture.

What is identical

Worth knowing as much as the differences: these are the specifications you cannot use to tell the two apart.

Water resistance: 30 bars (300 m / 990 ft)
Crystal: Cambered sapphire, glareproofed both sides
Dial: Black, as stated in the page description
Case back: Screwed in
Crown: Screw-locked, two gaskets
Frequency: 28,800 v.p.h

What the differences cost you

Each note below follows from the published figures in the tables above — what they mean for intake, for a listing, and for the handover. Nothing here estimates a price or a margin.

These reach different buyers

44 mm on the A32320101B1X1 against 42 mm on the A17375211B1S1. Diameter is a poor predictor of how a watch actually sits, but it is the field buyers filter on, so the two land in front of different people. Do not let one listing's photographs or copy stand in for the other.

Different movements to verify and to service

The A17375211B1S1 runs the Breitling 17 and the A32320101B1X1 the Breitling 32. Two consequences at intake: the service history that is normal for one calibre is not evidence about the other, and the calibre is the check that catches a movement swapped into the wrong case. Confirm the movement matches the reference rather than assuming it from the dial.

What to check on each

A17375211B1S1

Count the bezel clicks through a full turn and confirm it will not move clockwise at all. A dive bezel that can run backwards can understate elapsed time, which is the one failure mode the unidirectional design exists to prevent.
Seat and unseat the screw-locked crown several times, feeling for the thread catching cleanly. At 300 metres the crown is a primary seal and a cross-threaded one is an expensive tube repair.
Expect this to stop overnight if it is left off the wrist. Thirty-eight hours sits at the bottom of the range covered on this site, and a buyer used to a 70-hour movement will think the watch is faulty.

A32320101B1X1

Turn the bezel using its pinion and confirm the ring answers smoothly in both directions. This bezel is geared rather than gripped, so a damaged pinion leaves a bezel that cannot be moved at all.
Line up a city on the 24-timezone ring against the 24-hour hand and check the alignment is exact rather than approximate. A geared bezel that has slipped on its pinion reads wrong everywhere at once.
Note the thickness before quoting it. At 12.05 mm this is slimmer than several 42 mm watches documented here, which is a genuine selling point against the 44 mm diameter.

Sources

Not affiliated with Breitling. Specifications are read from each manufacturer's own published documentation on the dates shown and may change; the manufacturer's current documentation governs.