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Comparison · Omega

Omega Seamaster Diver 300M vs Planet Ocean

Two Omega references, 210.30.42.20.01.001 and 217.30.42.21.01.003, compared on the figures Omega publishes. Both product pages were read again on October 16, 2026.

Illustration of the Omega Seamaster Diver 300M 42 mm, to scale Diver 300M 210.30.42.20.01.001 Illustration of the Omega Seamaster Planet Ocean 600M 42 mm, to scale Planet Ocean 217.30.42.21.01.003
Both drawn to the same scale from the published diameter, lug-to-lug and lug width. Colours are read from the official photos.

What differs

  • Same diameter: 42 mm.
  • Thinner case: Diver 300M, by 0.23 mm (13.56 mm vs 13.79 mm).
  • Shorter lug-to-lug: Planet Ocean, by 2.4 mm (47.5 mm vs 49.9 mm).
  • Different lug widths: Diver 300M, 20 mm; Planet Ocean, 21 mm.
  • Higher water resistance: Planet Ocean (600 m vs 300 m).
  • Different calibres: Diver 300M, 8800; Planet Ocean, 8912.
  • Longer power reserve: Planet Ocean (60 h vs 55 h).
  • Same frequency: 25,200 vph (3.5 Hz).

Side by side

Every figure on this page is the brand’s own, from the product pages listed under Sources.

Specification Diver 300M210.30.42.20.01.001 Planet Ocean217.30.42.21.01.003 Difference
Case material Stainless steel Stainless steel Same
Case diameter 42 mm 42 mm Same
Case thickness 13.56 mm 13.79 mm 0.23 mm
Lug-to-lug 49.9 mm 47.5 mm 2.4 mm
Lug width 20 mm 21 mm 1 mm
Water resistance 300 m 600 m 300 m
Calibre 8800 8912
Type Automatic Automatic Same
Power reserve 55 h 60 h 5 h
Frequency 25,200 vph (3.5 Hz) 25,200 vph (3.5 Hz) Same

Sources

Full page and wrist-fit check: Omega Seamaster Diver 300M 42 mm, Omega Seamaster Planet Ocean 600M 42 mm

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