Finding alternatives to
RGM Watches Model 300 Divers
55 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
43.5mm
Movement
Automatic
MSRP
$4,450
The short answer
The closest alternative to the RGM Watches Model 300 Divers is the Grand Seiko SBGH289 ($7,700) — looks nearly identical and Automatic. If price is the constraint, the Seiko Prospex Sea PADI Special Edition at $650 (vs $4,450 for the Model 300 Divers) covers most of the same brief. From the independents, the Noctua Watch Corp. Sentinel is the standout microbrand take — looks nearly identical and Automatic. Stepping up, the Omega Seamaster Planet Ocean 6000M Co Axial Master Chronometer 45 5mm ($13,900) is where the same idea goes with a bigger budget.
55 matches
Microbrand picks· 12
Independent makers covering the same brief — usually with something the mainstream brands don't.
Mainstream picks· 12
Established brands covering the same brief at a comparable price — same case size, similar movement family. Often the deciding click for a new buyer.
Cheaper alternatives· 12
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Pricier alternatives· 12
Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.
Looks like this· 7
Visually-adjacent picks pulled by the image-similarity engine. Quality varies — sometimes a true twin, sometimes just a rhyme.
