Omega Seamaster Diver 300M vs Omega Seamaster Planet Ocean 600M 43.5
Omega Seamaster Diver 300M
210.30.42.20.01.001
Omega Seamaster Planet Ocean 600M 43.5
215.30.44.21.01.001
Side-by-side at a glance. Click a watch above to open the full reference page.
| Omega 210.30.42.20.01.001 | Omega 215.30.44.21.01.001 | |
|---|---|---|
| Model | Seamaster Diver 300M | Seamaster Planet Ocean 600M 43.5 |
| Caliber | Omega Cal. 8800 -- Co-Axial Master Chronometer automatic, 25,200bph, 55h PR, 30j; METAS-certified, anti-magnetic to 15,000 gauss, Naiad Lock | Omega Cal. 8900 -- Co-Axial Master Chronometer automatic, 25,200bph, 60h PR, 30j; METAS-certified, anti-magnetic to 15,000 gauss; used in Aqua Terra and De Ville |
| Case size | 42mm | 43.5mm |
| Lug-to-lug | 46.5mm | 50mm |
| Years produced | 2018–present | 2016–present |
| Brand tier | luxury | luxury |
| Era | modern | modern |
| Movement tier | In-house manufacture | In-house manufacture |
| Market median (excellent / full-set) | n/a | n/a |
| Typical range | n/a | n/a |
| Confidence | low | low |
| Categories | dive, sport | dive, sport |
| Editorial | yes | yes |
| Typical price (2026) | $4,000 – $5,500 | n/a |
| Collector note | landmark: The 1993 relaunch of the Seamaster Professional brought Omega back into serious collector conversation and powered a decade of commercial recovery for the brand. | n/a |
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