Omega Seamaster 300m
34 % 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.
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Technical data
Lift angle 51° — 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. 2255.80.00 — Variants and collector names
Known as: Electric Blue, Electric Blue Wave Dial, SMP Electric Blue, Bond Watch Electric Blue
Production phases and changes
- 2000: Market introduction of Ref. 2255.80.00 (Speedmaster bracelet) as the Electric Blue variant of the Seamaster 300M; parallel Bond bracelet version Ref. 2055.80.00
- 2006: Omega introduces Co-Axial caliber 2500 in the Seamaster 300M; caliber 1120 gradually phased out
Movement variants
- 1120 (?–today) · 28800 bph
Bezel variants
- 2255.80-Steel-0-60 "Steel Dive Bezel – No Paint"
Dial variants
- Electric Blue Wave Dial — SEAMASTER / PROFESSIONAL / 300M=1000ft / date at 3h / Omega logo / chronometer line
Crystal variants
- Saphir-AR-Dom-2255
Bracelet variants
- Seamaster Diver Ref. 1572
Omega launches the Ref. 2255.80.00 in 2000 — a Seamaster Professional 300M with Electric Blue Wave Dial, caliber 1120, and Speedmaster bracelet. Not to be confused with the parallel Bond bracelet variant, the Ref. 2055.80.00. Anyone who sees the Tropic Blue of the dial for the first time understands why collectors around the world reach for the nickname "Electric Blue," even 25 years after its release.
## Where the Electric Blue Comes From — and What Makes It Rare
A year before the 2255.80.00, Omega laid the groundwork with the Jacques Mayol Edition (Ref. 2554.80, mid-size, 3,500 pieces). Arriving alongside the main series were two numerically limited special variants: the Royal Navy Clearance Divers Ref. 2257.80.00, capped at 150 pieces, and the Ian Thorpe Edition Ref. 2256.80.00, with just 100 examples. The regular 2255.80.00 carries no official production limit, but its window was short: from 2006 onwards, Omega began rolling the Co-Axial caliber 2500 into the Seamaster 300M line, gradually phasing out caliber 1120. Late examples with high serial numbers are documented as far as around 2007.
## What Caliber 1120 and the Bare Steel Bezel Mean Today
The steel dive bezel, uncoated and unadorned, accumulates two decades of wear that collectors read as a clear authenticity marker. Caliber 1120 is an ETA derivative — robust and fully serviceable, without the idiosyncrasies Co-Axial movements can introduce. On the pre-owned market, the 2255.80.00 trades between $2,100 and $3,734 depending on condition and completeness; near-mint examples with the original box routinely cross the $2,917 mark.
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 300m
Entry into Omega
At $3,135 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.
Watch out for swings: This reference has an above-average volatility of 55.3 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 300m 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 300m.
- 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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