Breitling · Chronomat and Superocean Heritage
Breitling A10320101A1A1 vs Breitling U10340161C1A1
7 published specifications differ between these two, and 7 are identical. Every figure below is what the manufacturer states for that reference; nothing is inferred from the other watch.
What differs
| Specification | ||
|---|---|---|
| Case | Stainless steel, 36 mm | Stainless steel and 18k red gold, 38 mm |
| Diameter | 36 mm | 38 mm |
| Thickness | 9.68 mm | 9.35 mm |
| Lug width | 16.05 mm | 18 mm |
| Dial | Mother-of-pearl, as stated in the page description | Blue, as stated in the page description |
| Bracelet | Stainless steel bracelet, straight, 20 mm | Stainless steel bracelet, curved, 18/16 mm |
| Movement notes | Calendar shown in a dial aperture. | No chronograph or calendar complication is listed for this reference. |
What is identical
Worth knowing as much as the differences: these are the specifications you cannot use to tell the two apart.
- Water resistance
- 10 bars (100 m / 330 ft)
- Crown
- Non screw-locked, two gaskets
- Calibre
- Breitling 10
- Movement
- Self-winding mechanical
- Power reserve
- Approximately 42 hours
- Frequency
- 28,800 v.p.h
- Jewels
- 25
Stated for one, not the other
These rows cannot be compared, because one maker publishes the figure and the other does not. An empty cell is a gap in the manufacturer's documentation, not a gap in the watch — and not a licence to fill it in from the other column.
| Crystal | not stated | Cambered sapphire, glareproofed both sides |
|---|---|---|
| Bezel | not stated | Bidirectional ratcheted |
| Case back | not stated | Screwed in |
| Clasp | not stated | Stainless steel folding clasp, 16 mm |
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
38 mm on the U10340161C1A1 against 36 mm on the A10320101A1A1. 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.
One of these is a different asset to hold
The U10340161C1A1 has a gold case and the A10320101A1A1 is steel. That is not just a price difference: a precious-metal case changes what your insurer needs told, how the piece should be stored and handled, and — in some jurisdictions — whether trading it puts you under a precious-metals rule your steel stock would not. Check your own city guide before you assume they are the same transaction.
What to check on each
A10320101A1A1
- Photograph the mother-of-pearl dial from at least three angles. It is a natural material whose figuring differs on every example, so a single flat image does not describe the watch a buyer will receive.
- Look for hairline cracks and lifted edges in the nacre under a loupe, particularly around the date aperture and the applied markers where the material is cut.
- Note that this page publishes no crystal, bezel or case back line. Do not fill those gaps from another Chronomat, and say in the listing that the maker does not state them.
U10340161C1A1
- Read the crown specification before you describe this as a dive watch. It is a Superocean rated to 100 metres with a crown that does not screw down, which is not the same proposition as the 300-metre references in the same family.
- Check where the red gold is and where the steel is, then judge wear separately on each. Gold is softer, marks more readily and cannot be refinished as freely, so a two-metal case wears unevenly by nature.
- Confirm the bezel turns both ways. It is specified as bidirectional here, unlike the unidirectional bezels on the dive-rated Superoceans, and a stiff one is a fault rather than a safety catch.
Sources
- Breitling official product page for reference A10320101A1A1 (Chronomat Automatic 36) - Caliber: Breitling 10; Movement: self-winding mechanical; Power reserve: approx. 42 hours; Vibration: 28,800 v.p.h; Jewel: 25 jewels; Calendar: dial aperture; Case material: stainless steel; Water resistance: 10 bars (100 m / 330 ft); Crown: non screw-locked, two gaskets; Diameter: 36 mm; Thickness: 9.68 mm; Lug width (in-between lug): 16.05 mm; Strap material: stainless steel; Strap color: metal bracelet; Strap type: straight; Lug: 20 mm; page meta description states a mother-of-pearl dial; no caseback, bezel or crystal line is published on this page — retrieved 2026-09-22
- Breitling official product page for reference U10340161C1A1 (Superocean Heritage '57 Highlands) - Caliber: Breitling 10; Movement: self-winding mechanical; Power reserve: approx. 42 hours; Vibration: 28,800 v.p.h; Jewel: 25 jewels; Case material: stainless steel and 18k red gold; Caseback: screwed in; Water resistance: 10 bars (100 m / 330 ft); Bezel: bidirectional ratcheted; Crown: non screw-locked, two gaskets; Crystal: cambered sapphire, glareproofed both sides; Diameter: 38 mm; Thickness: 9.35 mm; Lug width (in-between lug): 18 mm; Strap material: stainless steel; Strap color: metal bracelet; Strap type: curved; Lug: 18/16 mm; Buckle material: stainless steel; Buckle type: folding clasp; Buckle size: 16 mm; page meta description states a blue dial — retrieved 2026-09-22
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.