Omega Seamaster Planet Ocean 600M Master Chronometer GMT 43.5mm vs Omega Seamaster Diver 300M
Omega Seamaster Planet Ocean 600M Master Chronometer GMT 43.5mm
215.30.44.22.01.001
Omega Seamaster Diver 300M
210.30.42.20.01.001
Side-by-side at a glance. Click a watch above to open the full reference page.
| Omega 215.30.44.22.01.001 | Omega 210.30.42.20.01.001 | |
|---|---|---|
| Model | Seamaster Planet Ocean 600M Master Chronometer GMT 43.5mm | Seamaster Diver 300M |
| Caliber | Omega Cal. 8906 -- Co-Axial Master Chronometer automatic GMT, 25,200bph, 60h PR, 39j; free-sprung balance with silicon hairspring, two barrels mounted in series, independent local-hour GMT hand; METAS-certified, anti-magnetic to 15,000 gauss | Omega Cal. 8800 -- Co-Axial Master Chronometer automatic, 25,200bph, 55h PR, 35j; METAS-certified, anti-magnetic to 15,000 gauss, Naiad Lock |
| Case size | 43.5mm | 42mm |
| Lug-to-lug | 49.4mm | 46.5mm |
| Years produced | 2016–present | 2018–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, gmt-worldtime, sport | dive, sport |
| Editorial | n/a | yes |
| Typical price (2026) | n/a | $4,000 – $5,500 |
| Collector note | n/a | 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. |
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