Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold

Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold

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The Fifty Fathoms Bathyscaphe model, renowned for its dual function as a diving instrument and civilian timepiece, now comes in a version combining a blue dial and bezel with a Sedna® gold case: Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold Ref. 5000-36S40-O52A.

Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold

The history of the Fifty Fathoms goes back to 1953, when Blancpain unveiled a timepiece that was to become the first professional diver’s watch. A few years later, Blancpain complemented this time measuring instrument with the Bathyscaphe model, thereby aiming to offer a diver’s watch in a size suited to everyday wear.

Reissued in 2013 in a contemporary version to celebrate the 60th anniversary of the Fifty Fathoms, the Bathyscaphe has since been enriched with a wide choice of models, both in terms of complications and materials. For the first time combining a blue dial and bezel with a Sedna® gold case, the new Bathyscaphe by Blancpain is an elegant addition designed to delight lovers of water sports and beautiful watches as well as experienced divers.

Blue symbolizes Blancpain’s passion and commitment to the underwater world. This deep colour exalts its shimmering reflections and plays with light thanks to the sunburst finish of the dial. Rectangular hour-markers and the chapter ring composed of gold and Super-LumiNova® dots further make their contribution to endowing the dial with an elegant and perfectly legible appearance in any situation. Complemented by a slim seconds hand and a date window, the hour and minute hands are also rectangular and coated with Super-LumiNova®, evoking the Bathyscaphe watches of the 1950s.Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold

Crafted from Sedna® gold – a gold, copper and palladium alloy guaranteeing the exceptional durability of red gold –, the 43 mm case features a sharp outline and satin finish that gives the Bathyscaphe a sporty yet refined look. The Sedna® gold unidirectional rotating bezel is fitted with a ceramic insert including a Ceragold® time scale and hour-markers.

Water-resistant to 300 meters, the new Fifty Fathoms Bathyscaphe beats to the rhythm of the 1315 calibre. Stemming from a longstanding quest for precision and performance, this self-winding movement was specially developed and produced by Blancpain to equip its sports watches. Its three series-coupled barrels provide it with a five-day power reserve while maintaining constant energy. Its balance features a silicon balance-spring that ensures remarkable regularity of the oscillation frequency as well as impermeability to magnetic fields. A sapphire case-back provides visual access to the movement, revealing all the beauty of a sandblasted, satin-finished and snailed Sedna® gold oscillating weight engraved with the Blancpain logo, along with snailed and bevelled bridges.

Blancpain Fifty Fathoms Blue Bathyscaphe Sedna Gold Technical Specifications



  • Date and seconds
  • Blue dial
  • Unidirectional Sedna® gold bezel with ceramic insert and Ceragold® hour-markers
  • Self-winding


  • Diameter: 43.00 mm
  • Thickness: 13.40 mm
  • Water-resistance: 30 bar
  • Interhorn space: 23.00 mm


  • Calibre 1315
  • Diameter: 30.60 mm
  • Thickness: 5.65 mm
  • Frequency: 4Hz
  • Power reserve: 120 hours
  • Jewels: 35
  • Components: 227

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