The Blancpain Fifty Fathoms 70th Anniversary Act 2 Tech Gombessa is a technical-diving watch built around a three-hour dive-time display. Its dedicated hand takes three hours to complete one rotation, extending the elapsed-time scale beyond the one-hour display common on dive watches. Blancpain introduced it in 2023 with closed-circuit rebreather (CCR) diving and long underwater immersions in mind.
What is the Fifty Fathoms Tech Gombessa?
The Tech Gombessa is the second release in Blancpain’s Fifty Fathoms 70th-anniversary series, announced on 16 February 2023 as the start of a technical-diving line. The exact reference is 5019 12B30 64A, which distinguishes it from other anniversary watches and later Fifty Fathoms Tech models. Blancpain describes it as a watch for technical diving and says its design was developed particularly with CCR diving in mind. Blancpain’s launch announcement
How the three-hour dive-time display works
A dedicated dive-time hand completes one rotation in three hours, and the unidirectional rotating bezel provides the matching elapsed-time scale. Together they are intended to let the wearer track immersion time for as long as three hours, rather than relying on a scale that completes a turn every 60 minutes. Blancpain’s launch release says, “This new timepiece dedicated to technical diving offers immersions of up to 3 hours for the first time.”
Blancpain differentiates local-time indications in blue from immersion-time indications in green. The three-hour display is a mechanical timing feature, not a substitute for a dive computer, decompression planning, or the training and procedures required for technical diving.
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Case, movement and official specifications
These are specifications published by Blancpain for reference 5019 12B30 64A on its US product page; they are not independent test results.
| Specification | Blancpain listing |
|---|---|
| Case material | Grade 23 titanium |
| Diameter | 47.00 mm |
| Thickness | 14.80 mm |
| Water resistance | 30 bar |
| Movement | Automatic calibre 13P8 |
| Power reserve | 120 hours |
| Balance spring | Silicon |
| Dial | Absolute black |
| Strap and fastening | Rubber strap; pin buckle shown on the US page |
The case is titanium, and Blancpain’s launch material identifies it as grade 23. The manufacturer says the silicon balance spring is resistant to temperature changes and magnetic fields; that is Blancpain’s description, not an independently verified performance finding. The launch announcement also says the black dial absorbs up to 97% of light.
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Blancpain lists a helium valve and the three-hour unidirectional bezel among the watch’s technical-diving features. Those features describe the design and intended use; the published specifications alone do not establish real-world accuracy, legibility, durability, or diving performance. Official Blancpain model page
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.US price and availability
Blancpain’s US product page displayed a price of $35,000 when checked in 2026. The page notes that price may vary with the strap-fastening choice. This is a displayed US price, not a universal price; check Blancpain’s page for current pricing and local availability.
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