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Ref. 210.30.42.20.03.001
Omega

Seamaster Diver 300M

Seamaster Diver 300M in the classic wave-dial black. Co-Axial Master Chronometer calibre 8800, 300m water resistance, helium escape valve. The best-value dive watch in the mainstream luxury segment.

Read the Omega Seamaster Diver 300M buying guide
Market median
A$8,400
Fair band
± 8%
30-day trend
+0.4%
Rarity
Available
Diver 300M is core Omega line
AD wait
1 mo
Widely available at Omega ADs
Live listings
0
0 AU · 0 intl
Best buy range
A$7,728 – A$8,400
At or below median = fair
Insurance value
A$9,912
Replacement cost estimate
12-mo outlook
+4.8%
Projected from 30-day trend
Market median · global currencies

estimate · no usable sample

🇦🇺 AUD
A$8,400
low confidenceData quality on this reference
Sold (12 mo)
0
Live listings
0
Last sale
—

Limited closed-sale data. Verdicts derived from live asking prices only. How we source our data.

65
/ 100
WatchMerit Score
AverageMiddle ground

Middle-of-the-road on the metrics we track.

Price Value
75 / 100

How this asking price compares to WatchMerit's fair market band.

Collector Demand
72 / 100

Waitlist pressure, search volume and AD allocation difficulty.

Rarity
55 / 100

Estimated share of collectors who own this reference.

Liquidity
45 / 100

How many active listings we currently track for this reference.

Historical Return
60 / 100

Cumulative secondary-market change since 2020.

Market Momentum
66 / 100

30-day price direction across tracked listings.

Weighted composite of price value, demand, rarity, liquidity, historical return and momentum. Informational only — not financial advice.

Digital Passport

Verified spec
Original retail
A$8,900
Launched 2018
Current vs retail
-6%
trading under RRP
All-time high
A$9,800
2022 · +10% over retail
All-time low
A$8,100
2024
Off ATH
-14%
cooled from peak
Status
In production
8 yr since release
Technical specifications
Movement
Omega 8800
Case
42mm
Water resistance
300m
Power reserve
55 hr
Material
Stainless steel
Complications
Date · Helium escape valve

Ownership cost calculator

Model the true cost of owning this watch — service intervals, insurance, storage, and projected value change.

5 yr
1 yr15 yr
Omega Master Chronometer service. Insurance modelled at 1.5%/yr of insured value. Storage/winder overhead A$40/yr. Value projection annualises current 30-day trend and dampens over time.
Service · every 8 yr
A$0
0× in 5 yr
Insurance
A$630
1.5% of value / yr
Storage / winder
A$200
A$40 / yr
Projected value in 5 yr
A$9,343
+A$943 vs today
Total net holding cost
-A$113
Service + insurance + storage – value change
True cost per year
-A$23
Across 5 yr hold
Ownership yield
+0.27%
Net annualised vs purchase price

Every dealer · Ref. 210.30.42.20.03.001

All current dealer prices for this watch, cheapest first.

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