Breitling Chronomat Automatik 36 South Sea
+10 % above 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.
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Technical data
Breitling Ref. G10380611C1G1 — Variants and collector names
Known as: Chronomat 36 South Sea Blue, South Sea Ice Blue, Lady Chronomat South Sea Gem
Production phases and changes
- 2021: Launch of the Chronomat 36 South Sea Capsule Collection with 611 gem bezel in steel
- 2023: Addition of G-prefix (steel + 18k white gold) incl. Rouleaux bracelet option G1
Movement variants
- B10 (2021–today) · 28800 bph
Bezel variants
- A10380-611-Gem-South-Sea "South Sea Gem Bezel"
Dial variants
- South Sea Midnight Blue — BREITLING / CHRONOMAT / AUTOMATIC 36 / date at 6 o'clock / 11 diamond hour indices + gilt baton indices
Crystal variants
- Saphirglas beidseitig AR
Bracelet variants
- Rouleaux – Stahl + 18k Weißgold Ref. A10380-G1-Rouleaux-SteelWG
- Alligator-Lederarmband (Schwesterref. G10380611C1P1) Ref. A10380-P1-AlligatorLeather-WG
The G10380611C1G1 is the white gold variant of the Chronomat 36 South Sea, which Breitling originally launched in 2021 as an A-prefix model in full stainless steel. Three colorways, the P1 leather strap exclusively, and a collaboration with the luxury fashion app DREST defined the debut — a collection aimed squarely at a well-defined buyer from day one.
## 2023: A White Gold Setting for the Gem Bezel
The G-prefix variants of 2023 marked Breitling's next move up the ladder. The gem bezel gained an 18-karat white gold setting, and the Rouleaux bracelet (G1) arrived as a bracelet option. US retail starts at $13,650 — on the British market, the price is £11,300. That spread explains the gap to the steel edition: the A-variant without white gold detailing trades noticeably below that figure on the secondary market.
## Calibre B10 and the South Sea Midnight Blue Dial
Inside the case runs Calibre B10, Breitling's in-house automatic movement for the 36 mm line. The dial on the G10380611C1G1 carries the collector designation South Sea Midnight Blue — diamond-set hour indices, specified under code A10380-611-C1-Blue-Diamond. The South Sea Gem Bezel (code A10380-611-Gem-South-Sea) rounds out the look: brilliant-cut diamonds encircling the bezel, white gold setting, Rouleaux link bracelet.
## Secondary Market: What the G-Prefix Commands
G-variants have been trading since 2023, but supply stays thin. Anyone hunting pre-owned is working in a low-turnover segment — finding one below retail is the exception, not the rule.
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 Automatik 36 South Sea
Market situation and price range
At $12,516 the Chronomat Automatik 36 South Sea sits in a segment where first owners sell regularly — clean pieces with box and papers are not uncommon. The jump from "good" to "very good" usually costs 1,000 to 2,000 euros more at purchase. You get that premium back on resale if the condition is preserved.
Watch out for swings: This reference has an above-average volatility of 59.2 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 Automatik 36 South Sea 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 Automatik 36 South Sea.
- 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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