Contemporary dive watch
Diver 300M
The modern professional-diver path, recognized by its wave-dial and helium-valve design language. Case, calibre, dial, material and attachment vary by reference.
Explore Diver 300M →Omega Seamaster · Collection Authority Hub
Compare current Omega Seamaster watches by family and exact reference: Diver 300M, heritage-oriented Seamaster 300, Planet Ocean 600M, specialist Ultra Deep 6000M and fixed-bezel Aqua Terra 150M—with condition review and sourcing support.
Choose the right family first
Seamaster is an umbrella collection, not one specification. Choose the intended use and family, then verify the complete reference, dimensions, movement, water resistance and configuration.
Contemporary dive watch
The modern professional-diver path, recognized by its wave-dial and helium-valve design language. Case, calibre, dial, material and attachment vary by reference.
Explore Diver 300M →Heritage dive design
A distinct family inspired by Omega’s 1957 dive-watch language. It is not an alternate name for the Diver 300M.
Compare Seamaster 300 →Greater tool-watch presence
Planet Ocean is the substantial technical branch; Ultra Deep is a specialist family rather than merely a larger Planet Ocean. Compare thickness, weight and rating exactly.
Compare professional families →Everyday sport versatility
The fixed-bezel Seamaster branch moves naturally between business and casual wear while retaining sport-watch capability across multiple sizes and configurations.
Explore Aqua Terra →Buying Desk reviewed · August 28, 2026
117 watches are currently shown in this collection. Exact product pages control price, availability, condition and included items.
The contemporary Seamaster dive-watch path, offered across multiple materials, dials and bracelet or strap configurations. It is a distinct family—not another name for the heritage-oriented Seamaster 300.
A heritage-oriented dive-watch family inspired by Omega’s 1957 design language. Its case architecture, dial treatment and reference structure differ from the Diver 300M.
The more substantial, pressure-oriented Seamaster direction. Compare diameter, thickness and weight carefully; Planet Ocean and specialized Ultra Deep references generally have a stronger tool-watch presence.
The everyday sport-watch branch of Seamaster. Its fixed-bezel design and broad size range make it more adaptable to business and casual wear than the rotating-bezel dive families.
Yes. Aqua Terra is an Omega Seamaster family, but its fixed-bezel design and everyday role distinguish it from the Diver 300M, Seamaster 300 and Planet Ocean dive-watch families.
They are separate families. The Diver 300M represents Omega’s contemporary dive-watch direction, while the Seamaster 300 follows a more heritage-oriented design. Specifications vary by exact reference.
Choose the Diver 300M for a generally more versatile everyday profile. Choose Planet Ocean when greater visual and physical presence is part of the appeal. Compare actual dimensions and weight before purchasing.
Active listings are presented as unworn watches. The exact reference, warranty-card date, configuration, box, cards, accessories and current availability are confirmed before payment.
Yes. Submit the complete reference number or preferred family, size, material, dial and bracelet or strap. The Buying Desk will confirm availability, documentation and current pricing.