Omega Seamaster Diver 300 M
17 % 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 Omega Seamaster Diver 300 M (Ref. 210.30.42.20.04.001) is $6,311. The trend points up (plus 19.8% 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 $6,311. 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.
Omega Ref. 210.30.42.20.04.001 — Variants and collector names
Known as: White Wave, SD300M Weiß 2018, Ceramic White Diver
Production phases and changes
- 2018: Complete relaunch: 41mm→42mm, Cal. 8800 (METAS), white ceramic dial with laser-engraved waves, black ceramic bezel with enamel scale
Movement variants
- 8800 (2018–today) · 25200 bph
Bezel variants
- SD300M-42-Keramik-Schwarz-WeissEmail-60min
Dial variants
- White Wave — SEAMASTER (red) / 300M-1000FT / Date 6h
Crystal variants
- Saphir-gewoelbt-AR-beidseitig-SD300M-42
Bracelet variants
- Oyster-Style 3-Link Stahl gebürstet/poliert Ref. SD300M-42-3Link-Steel-2018
## First 41, Then 42: The 2018 Break
Baselworld 2018 marks a turning point for the Seamaster Diver 300M. For the collection's 25th anniversary, the case grows from 41 to 42 millimeters, and inside sits the Caliber 8800 with METAS certification for the first time. 14 references launch simultaneously for the anniversary, and the 210.30.42.20.04.001 is the only one in this lineup with a white dial and steel bracelet.
## Why Collectors Call It "White Wave"
Among collectors, this model has earned its own nickname: White Wave, sometimes also Ceramic White Diver or simply SD300M White 2018. The name comes from the dial itself, internally designated SD300M-42-White-Ceramic-Waves-Black-Date. The wave pattern isn't printed — it's laser-engraved into white ceramic, a technique Omega had previously used on the 300M only in black and blue.
## The Bezel Carries the Second Half of the Story
Alongside the dial innovation comes a bezel combination that's also new for Omega: black ceramic with a white enamel 60-minute scale, catalogued as SD300M-42-Ceramic-Black-WhiteEnamel-60min. This color reversal — white dial against black bezel — visually sets the .04.001 apart from its bluer siblings in the same 2018 lineup and makes it instantly recognizable on the wrist.
## What This Means for Recognition
For authentication purposes, this reference lives or dies on the interplay between the wave texture and the Caliber 8800. If someone offers you a 210.30.42.20.04.001 with a smooth, printed dial or no METAS reference, you know immediately: something's off for a 2018 Basel piece.
Brand profile: Omega
Omega is the second most counterfeited Swiss watch brand. The Speedmaster and Seamaster are especially targeted. Pay close attention to movement details (Co-Axial) and dial textures.
- Speedmaster: The chronograph reset hand must snap back precisely to 12 o'clock — fakes stop 1–3 seconds off or wobble
- Speedmaster (Hesalite): The Omega logo is micro-laser-etched on the UNDERSIDE of the Hesalite crystal — only visible at a specific angle and in the right light — fakes omit it or place it incorrectly
- Seamaster: The wave-pattern dial must be ENGRAVED (tactile relief) — printed/flat wave lines = fake
- DON (Dot Over Ninety): small dot ABOVE the '90' on the Speedmaster tachymeter bezel — position/size often wrong on fakes
Serial number format: Omega serial number: 8-digit number on the caseback or between the lugs (on older models). Since ~2018 engraved on the caseback at 6 o'clock. Format: purely numeric. Verifiable on the Omega website with an extract from the archive.
Further sources
Buying guide: Omega Seamaster Diver 300 M
Entry into Omega
At $6,311 this reference is one of the more affordable ways to wear a Omega 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 Seamaster Diver 300 M has risen by +19.8% 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 68.3 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 Omega Seamaster Diver 300 M 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 Seamaster Diver 300 M.
- 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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