Ref. 210.30.42.20.01.001
Seamaster Diver 300M
Omega
“Seamaster 300M”
Case 42mm
Material Stainless steel
Year 2018
From $4,700
The Seamaster Diver 300M in black is a professional-grade dive watch with a unidirectional rotating bezel in ceramic and a laser-engraved wave pattern dial. Powered by the co-axial calibre 8800, it features Master Chronometer certification and a helium escape valve for saturation diving. The 42mm case on a steel bracelet is the quintessential modern Omega dive watch.
Below AverageOmegaSeamasterSeamaster Diver 300M
Retail Price
$5,700
Market Value
$4,700
Price Analysis
Retail (MSRP)$5,700
Market Range$4,200 – $5,200
$4,200$5,200
Average Market Price$4,700
Premium vs Retail-17.5%
Price TrendFalling
Last updated: 2026-02-14
Flip Potential
2out of 10
Below Average
Premium over retail-17.5%
Market trenddown
Potential profit (est.)-$1,000
Specifications
Complete technical details for the Omega Seamaster Diver 300M
Case
- Diameter
- 42mm
- Thickness
- 13.56mm
- Material
- Stainless steel
- Bezel
- Black ceramic unidirectional rotating bezel with diving scale
- Crystal
- Domed sapphire crystal with anti-reflective treatment
- Water Resistance
- 300m / 1000ft
Movement
- Calibre
- Omega Co-Axial Master Chronometer calibre 8800
- Type
- Automatic
- Power Reserve
- 55 hours
Bracelet
- Bracelet
- Stainless steel bracelet
- Clasp
- Folding clasp with diver extension
- Lug Width
- 20mm
Where to Buy
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