Tim Mosso at The 1916 Company just spent real wrist time with Omega’s green-dial Seamaster Diver 300M, and the review lands on a clean split. The green ceramic is the whole reason to buy this watch. The strap and the helium valve are the price of admission.
Gadgeteer hasn’t handled this reference ourselves, so every hands-on line here belongs to Mosso. The specs, the price, and the buy route are Omega’s own, verified on the brand’s US store this morning.
Price: $6,300
Where to buy: Omega
What it is
This is ref. 210.32.42.20.10.001, a 42 mm steel case with a polished green ceramic dial and a green ceramic bezel insert, on an integrated green rubber strap. The wave pattern on the dial is laser-engraved in positive relief, so the waves catch light instead of sitting printed under the crystal. It runs the Calibre 8800, Omega’s Master Chronometer movement with a 55-hour reserve and resistance to magnetic fields up to 15,000 gauss.
The case measures 13.56 mm thick and 49.93 mm from lug to lug, with 300 m of water resistance and a screw-in crown. The manual helium escape valve sits at 10 o’clock, and the caseback is sapphire, so the 8800 stays on view. Omega covers it with a five-year warranty.
The price is $6,300 at Omega’s US store, where it shows in stock. The strap closes with a pin buckle, per Omega’s own spec sheet.
The Diver 300M line goes back to 1993, and the current generation dates to 2018. The green dial arrived in 2022, and it is still the boldest color in the range. The blue ceramic version of the same watch is the quieter option, and the green one is the one people notice first. Omega keeps the case and the movement identical across both, so the dial is the whole decision between them.
Omega’s own film on the green Diver 300M line is worth a watch, with one caveat: it covers the green variant generally, not this exact reference.
What the hands-on liked
Mosso’s first call is the color. The green reads truly green in daylight, not blue-green, and the polished ceramic keeps it that way under any light. Scratch resistance is the practical payoff: the dial and the bezel shrug off the scuffs that would mark a lacquered dial.
The bezel earned a specific compliment. It is the lightest-feeling 120-click bezel he has handled. The display back gets the same treatment, the 8800 finished to be looked at rather than hidden behind steel.
Fit surprised him in a good way. The watch wears well on his 16 cm wrist even with the 49.9 mm lug-to-lug length, which is the number that usually sinks a 42 mm diver on a smaller wrist. He prefers it on the rubber strap, which is where the rest of the story starts. Part of that fit is the strap itself, which pulls the case down onto the wrist instead of letting it sit on top of it.
What it did not
The bezel’s light action has a cost. Mosso found the knurling too shallow for a confident grip with wet hands, and a diver’s bezel is exactly the control you reach for with wet hands.
The strap takes the harder criticism. It runs stiff where it meets the case, then turns spongy once it gets wet, which is an odd combination for a watch rated to 300 m. The closure is a pin buckle, per Omega’s spec sheet, and nothing in the review argues with that part. For a 300 m watch, a strap that changes character in the water is the wrong trade.
The thickness is the third knock. At 13.6 mm the case is not thin, and it wears that way under a cuff. The manual helium valve stands proud of the case, and spoils a profile that is otherwise clean.
None of that is a deal-breaker on its own, and Mosso’s tone stays warm through the complaints. The point is narrower: this is a watch whose best quality and its worst ones both come from the same choices, a ceramic color story and a rubber-strap diver build. The review stays positive overall, and the criticism lands on daily wear, not on the movement or the finish.
Buying it
Omega sells it direct at $6,300, and the US store shows it in stock as of this morning. That is the buy route: Omega’s own store is the only place carrying this exact reference right now.
The black dial runs $5,999.99 on Amazon, the same 42 mm case and the same Calibre 8800 under a different dial. It is the pragmatic pick for anyone who wants the watch without the green’s attention, and it is the only Diver 300M in this line with a verified Amazon listing today. The differences between the two start and end at the dial color and the strap pairing.
Price: $5,999.99
Where to buy: Amazon
Our best dive watches roundup carries this green dial among the month’s picks, and the blue ceramic version has its own write-up. Both are worth a look before the $6,300 leaves your pocket.
What it adds up to
Buy the green one for the green. The ceramic dial and bezel are the reason this reference exists, and Mosso’s hands-on confirms the color holds up in daylight better than most green dials manage. The strap and the valve are the trade, and neither one dims the dial. The ceramic also buys scratch resistance a lacquered dial cannot match, so the color should look the same in five years.
If the green is what caught your eye, the hands-on says trust it. If the strap is what worries you, the review says you’re right to worry, and the black dial on Amazon is the same watch without the argument. Either way, the movement, the case, and the ceramic work are not in dispute.
Price: $6,300
Where to buy: Omega
