DS Action Diver 300m

The DS Action Diver 300m is Certina's most capable tool watch: a full-spec dive watch with a silicon hairspring, ceramic bezel, and 80-hour power reserve at a price that undercuts almost every Swiss competitor. For buyers who want serious water resistance and modern movement technology without paying Tissot or Longines money, this reference is difficult to argue against. It is unambiguously a professional diver rather than a dressed-up sport watch.

What it is

Certina launched the DS Action Diver 300m in its current generation around 2018, pairing it with ETA's C07.611 Powermatic 80 caliber and a ceramic insert bezel to push the reference into genuine tool-watch territory. The DS name dates back to the 1960s, where "Double Security" referred to Certina's shock and water resistance system, and the brand has consistently positioned DS watches as capable everyday instruments rather than luxury pieces. The Powermatic 80 movement arrived across multiple Swatch Group brands starting around 2012, giving Certina access to a silicon hairspring and extended power reserve that was previously reserved for higher price tiers.

In the competitive 300m dive watch segment, this reference sits directly alongside the Tissot Seastar 1000, often preferred by buyers who want a slightly more utilitarian aesthetic and the ceramic bezel as standard.

Buying notes

At 43mm with a relatively tall case profile, the DS Action Diver wears large and is not comfortable on smaller wrists; buyers should measure their wrist before committing. The bracelet on early examples had noticeable play in the links, and some owners replace it with an aftermarket rubber or NATO strap for daily use. The ceramic bezel insert can chip under hard impact, and because the color is not fully through the ceramic, deep chips reveal a different substrate underneath.

Lume plots are adequate but not class-leading, so in low-visibility diving conditions this is worth noting against competitors like Seiko's SRP series. Resale values are modest, which is a feature if buying but a consideration if you plan to sell within a few years.

Market read

New, the DS Action Diver 300m retails in the $700 to $900 range depending on bracelet configuration and regional pricing, placing it at the upper end of the serious-tool-watch entry tier. Pre-owned examples sell between $450 and $650 in typical condition, with lightly worn pieces on bracelet holding value better than strap-only configurations. The market is thin compared to Tissot or Seiko, which means deals exist but also that finding a specific dial variant may take patience.

Service expectations

The C07.611 Powermatic 80 is an ETA-based caliber with a silicon hairspring and extended mainspring geometry producing the 80-hour reserve; Certina service centers and many independent watchmakers with ETA tooling can handle it without difficulty. Certina recommends a service interval of approximately 5 to 8 years under normal use, and parts availability through Swatch Group channels is reliable. Pressure testing after any case opening is essential given the 300m rating.