Omega Seamaster
Omega Seamaster dive watch guide: The Seamaster Diver 300M family (e.g. 210.30.42.20.xx) typically uses ~42 mm cases, 300 m / 1,000 ft water resistance, co-axial Master Chronometer movements (such as 8800/8806), sapphire crystal and ceramic or aluminium bezels. Many references include a helium escape valve. A core Swiss professional diver with wide colour and material options. Compare water resist
Independent guide with indicative specs. Verify the exact reference, water resistance and seller terms before purchase. Affiliate links may earn a commission.
The Seamaster Diver 300M family (e.g. 210.30.42.20.xx) typically uses ~42 mm cases, 300 m / 1,000 ft water resistance, co-axial Master Chronometer movements (such as 8800/8806), sapphire crystal and ceramic or aluminium bezels. Many references include a helium escape valve. A core Swiss professional diver with wide colour and material options.

This is editorial price context, not a live quote or guaranteed current price.
Quick answers about the Omega Seamaster
What is the water resistance of the Omega Seamaster?
300 m / 1,000 ft
What movement does the Omega Seamaster use?
Co-Axial Master Chronometer
What should I check before buying the Omega Seamaster?
Check the exact reference number, current specification, condition, retailer terms, warranty and current price. Different references within the same collection can have different dimensions or movements.
Where to check current availability
Retailer listings can change. Check the exact reference, price, stock and terms at the destination.
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