Seamaster Diver 300M family · 6 references Omega

Seamaster Diver 300M Mid-Size

36.3mm Popular Model
Low $1,938
Median $2,300
High $2,600
Search Seamaster Diver 300M Mid-Size Listings

The Omega Seamaster Diver 300M Mid-Size keeps the scalloped bezel, helium-release valve and distinctive bracelet of its larger sibling, but brings them into a 36.3mm case. It’s a particularly satisfying choice if you love the Seamaster’s busy, unmistakable design but want the watch to sit within the wrist rather than dominate it.

The generations offer genuinely different personalities. Earlier wave-dial versions give you texture and the familiar skeleton hands; the black-dial 2252.50 takes another route, pairing broad sword hands with large luminous markers for especially clear reading. Later ceramic-bezel models trade the engraved waves for a smooth, glossy dial and a cleaner-looking face. Decide which of those treatments you want before getting attached to a particular example. On the older aluminum bezels, wear can soften the markings; on ceramic versions, inspect the insert’s edges for chips. The scalloped bezel is also worth trying in hand: its shallow grip is distinctive, but not everyone finds it easy to turn.

MovementAutomatic
Case Size36.3mm
Water Resistance300m

What owners love

  • The 36.3mm case is the main draw: it sits neatly on a smaller wrist without the overhang of the full-size Seamaster. Owners who prefer modestly sized watches like that it still feels like a substantial diver rather than a scaled-down dress watch.
  • The bracelet is comfortable and drapes well around the wrist. Its closely spaced links help the watch sit naturally, which owners appreciate during long days of wear.

Common Criticisms

  • The scalloped bezel looks distinctive but isn't particularly easy to grip, especially with wet fingers. On the mid-size case, there's also less bezel to get hold of than on the larger version.

Reviews & Videos