Breitling Chronomat 42
26 % 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.
The current market value of the Breitling Chronomat 42 (Ref. AB0134101C1A1) is $7,235. The trend points up (plus 11.0% over four months).
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 $7,235. 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
Lift angle 52° — important for timing-machine diagnosis: with this value a watchmaker can correctly measure rate deviation, amplitude and beat error. ChronoCheck verifies such technical details directly from the manufacturers' factory specifications.
Breitling Ref. AB0134101C1A1 — Variants and collector names
Known as: Chronomat 42, B01 42, Neo-Chronomat, New Chronomat
Production phases and changes
- 2020: Market launch of the Chronomat B01 42 (AB0134) as the new flagship collection
- 2021: Expansion of the color palette, first special edition Frecce Tricolori (250 pieces, ref. AB01344A1C1A1)
- 2022: UK Monochrome Limited Edition (250 pieces, ref. AB01341B1B1A1) and Six Nations editions (150 pieces each, 6 countries)
- 2024: Titanium version and new shades of green as novelties; rubber strap combinations as regular catalog options
Movement variants
- B01 (2020–today) · 28800 bph
Bezel variants
- AB0134-101-UniSteel-60-RiderTabs "Rider Tab Bezel Steel"
- AB0134-721-Diamond-Uni60-RiderTab-Steel "Diamond Rider Tab Bezel"
Dial variants
- AB0134-101B1-Black — BREITLING / CHRONOMAT B01 42 / 3 registers: 30min@3h, 12h@6h, small sec.@9h / date@6h / baton indices
- AB0134-101C1-Blue — 3 registers: 30min@3h, 12h@6h, small sec.@9h / date@6h / baton indices
- AB0134-101G1-Silver — 3 registers: 30min@3h, 12h@6h, small sec.@9h / date@6h / baton indices
- AB0134-101K1-Copper — 3 registers: 30min@3h, 12h@6h, small sec.@9h / date@6h / baton indices
- Green Chronomat L1 / Bentley Green — BREITLING / CHRONOMAT / tachymeter outer ring / 3 registers / date at 6h
- Frecce Tricolori — FRECCE TRICOLORI logo at 12h / blue tone-on-tone registers / date at 6h
- Bentley Edition Green — BREITLING / CHRONOMAT / B01 42 / BENTLEY / Chronometer — 3 subdials at 3/6/9 o'clock
- Mint Green CMT42 — BREITLING top, CHRONOMAT B01 42 center, tachymeter scale on bezel, 3 counters (3h/6h/9h), date 6h
- Stealth Dial / Monochrome UK — Black dial, rhodium-plated rectangular applied baton indices, three anthracite-brushed chrono subdials (30-min counter 3h, 12h counter + date window 6h, small seconds 9h), printed white minute track on the rehaut (decimal scale), NO red accent
Crystal variants
- Sapphire-Cambered-AR
Bracelet variants
- Rouleaux Stahlarmband 42mm Ref. AB0134-A1-Rouleaux-Steel-42
- Kautschukband Blau mit Faltschließe Ref. AB0134-C1S1-BlueRubber
- Kautschukband Silber/Grau mit Schließe S2 Ref. AB0134-G1S2-SilverRubber
- Kautschukband Kupfer/Lachs mit Faltschließe Ref. AB0134-K1S1-CopperRubber
- Ocean Racer Kautschuk Schwarz (S1) Ref. AB0134-S1-OceanRacer-Rubber-Black
- Rouleaux Bicolor Stahl/18k Rotgold (U1) Ref. UB0134-U1-Rouleaux-TwoTone
- Kautschukband Dunkelgrün mit Faltschließe Ref. AB0134-L2S1-GreenRubber
## Blue dial, one watch with four nicknames
The Breitling Chronomat B01 42 in reference AB0134101C1A1 launched in 2020 with the blue C1 dial, one of three launch colors alongside black (B1) and silver (G1). Collectors know it by four different names — Chronomat 42, B01 42, Neo-Chronomat, New Chronomat — so if you're searching online, it pays to know all four. The case measures 42mm across, 15.1mm thick, with a 22mm lug width and 200m water resistance.
## The B01 caliber is what sets it apart from the previous generation
Inside beats Breitling's in-house Caliber B01, with 47 jewels, a 28,800 vph beat rate, and a 70-hour power reserve, COSC-certified. That manufacture movement is exactly what separates the 2020 relaunch from the older ETA-based Chronomat models — a selling point many buyers only appreciate on second glance.
## From copper to titanium: how the collection has branched out since 2020
In 2021, copper (K1) and dark green (L1) joined the dial color lineup, alongside rubber straps and the 250-piece limited Frecce Tricolori edition, with "ONE OF 250" engraved on the caseback. A year later came the UK Monochrome (250 pieces, sold only through British boutiques, £7,300) along with six Six Nations editions of 150 pieces each. Titanium didn't arrive until 2024, bringing additional shades of green that have since become permanent fixtures in the catalog. The C1A1 reference itself has stayed put throughout, holding steady with its blue Rouleaux steel bracelet base configuration — a fixed point that makes dial swaps easy to spot.
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 42
Entry into Breitling
At $7,235 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
The price of the Chronomat 42 has risen by +11.0% over the past four months. Anyone selling now hits a good window. If you want to buy: no need to wait — the market is currently more hot than cold, and a clear end to the trend is not in sight.
Watch out for swings: This reference has an above-average volatility of 121.3 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 42 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 42.
- 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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