Breitling Chronomat Automatic GMT 40 Grey Dial Watch
2 % below RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
What if you had bought back then …
What would a purchase at the median market price back then have become — at today's level of $6,722. A pure return calculation, excluding insurance, servicing and transaction costs.
Data from an aggregated median time series (watch_market_daily). CAGR = Compound Annual Growth Rate, normalized to 365 days. Not an investment recommendation.
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Technical data
Breitling Ref. A32398101M1A1 — Variants and collector names
Known as: Chronomat GMT 40, Chrono GMT 40 Grey
Production phases and changes
- 2022: Introduction of the Chronomat Automatic GMT 40 (A32398) – 40mm GMT without chronograph; Caliber 32; 5 dial colors
- 2023: Giannis Antetokounmpo special edition (A32398A11L1A1), limited to 1,750 pieces
- 2023: Sylt Limited Edition (AB32398), 288 pieces, exclusive to Germany / Juwelier Spliedt Kampen
Movement variants
- B32 (?–today) · 28800 bph
Bezel variants
- A32398-101-UniSteel-60
Dial variants
- A32398-101-M1-Grey — Tone-on-tone 24h scale; stick indices; red GMT hand; date at 3h
- Chronomat GMT 40 White — CHRONOMAT / AUTOMATIC GMT; date at 6 o'clock; red GMT hand; 24h scale; stick indices
- Chronomat GMT 40 Black — CHRONOMAT / AUTOMATIC GMT; date at 6 o'clock; red GMT hand; 24h scale; stick indices
- Chronomat GMT 40 Blue — CHRONOMAT / AUTOMATIC GMT; date at 6 o'clock; red GMT hand; 24h scale; stick indices
- Chronomat GMT 40 Green — CHRONOMAT / AUTOMATIC GMT; date at 6 o'clock; red GMT hand; 24h scale; stick indices; no printed hour markers
- Giannis Edition — Tone-on-tone 24h scale; stick indices; yellow GMT hand; Giannis Antetokounmpo signature; date at 3h
- Sylt Edition — 24h scale alternating navy/light blue; stick indices; red GMT hand; caseback engraving Kampen lighthouse + 'One of 288'
Crystal variants
- Sapphire-Cambered-AR
Bracelet variants
- Rouleaux Edelstahl Ref. Rouleaux-A1-Steel
In October 2022, Breitling added a model to the Chronomat family that runs against its own tradition. The A32398 does away with chronograph pushers entirely and shrinks the case to 40mm — at just 11.77mm thick, noticeably slimmer than the 42mm and 44mm Chronomats. The bezel follows the same diet, sitting visibly flatter than on its chronograph siblings. Water-resistant to 200m, powered by the in-house Caliber B32. Five dial variants launched at market debut, including green, black, blue, white — and grey, the dial on the A32398101M1A1.
## Grey is the quiet one among five siblings
While green and blue take center stage in Breitling's marketing, the grey dial (code A32398-101-M1-Grey) remains the most understated member of the lineup of five. No special edition, no limited run — simply one of the five standard colorways from 2022. Collectors know the reference by names like "Chronomat GMT 40" or "Chrono GMT 40 Grey," both referring to the same base model with its UniSteel bezel and 60-unit scale.
## Two special editions branch off from the base model
In 2023, Breitling drew on the platform twice for special editions. The Giannis Antetokounmpo version (A32398A11L1A1) came with a green dial, yellow GMT hand, and a limited run of 1,750 pieces. The Sylt Edition (AB32398) went even more exclusive: just 288 pieces, sold only through jeweler Spliedt in Kampen, with a navy sunray dial and a lighthouse engraving on the case back, starting at $6,612. Both editions carry their own reference codes — the grey A32398101M1A1 remains technically untouched by either, with the same base Caliber B32 ticking away in all three versions.
Brand profile: Breitling
Breitling is known for aviation and dive watches. Chronographs (Navitimer, Chronomat) are the most frequently counterfeited. Pay close attention to slide rule details and COSC certification.
- Wing logo: a genuine Breitling logo shows the anchor and wing tips that NEVER touch — precise negative space between them — fakes let the tips meet or overlap
- 3D 'B' crown: the 'B' on the crown must appear three-dimensional with a light reflection on the curve — a flat 'B' = fake
- Bezel scale vs. dial: the outer white bezel scale must align precisely with the inner black dial indices — fakes show misalignment
- Date disc depth: a genuine Navitimer date disc sits flush with the dial plane — fakes show the date window as a 'crater' (noticeably sunken or raised)
Serial number format: Breitling serial numbers: alphanumeric, located between the lugs at 6 o'clock. Format: one letter + 8 digits (e.g. 'AB012012'). Older models: digits only.
Further sources
Buying guide: Breitling Chronomat Automatic GMT 40 Grey Dial Watch
Entry into Breitling
At $6,722 this reference is one of the more affordable ways to wear a Breitling on your wrist. That is precisely why many pieces have already passed through several hands — condition varies accordingly. Buyers here should pay particular attention to service history and honest photos from the seller.
Where the price stands
Barely any movement over the past four months (+0.0%). The market for this reference is calm, with no pressure in either direction. Good for buyers who want to compare at their leisure.
Watch out for swings: This reference has an above-average volatility of 21.2 percent. In concrete terms: the price can move by several hundred euros within a few weeks. Check the current value before buying or selling — old listings or auction results from two months ago are of little help.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the Breitling Chronomat Automatic GMT 40 Grey Dial Watch reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Chronomat Automatic GMT 40 Grey Dial Watch.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
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