Introduced in 2013, the Blancpain Fifty Fathoms Bathyscaphe represents a modern evolution of one of the most important dive watches ever created. Drawing inspiration from Blancpain’s pioneering 1950s Fifty Fathoms, the Bathyscaphe refines the original concept into a slimmer, more technical, and highly wearable luxury sports watch—without sacrificing professional dive capability.

This reference, 5000-36S30-B52 A, pairs 18k Sedna Gold with a deep sunburst black dial and bezel, creating a bold yet refined expression of Blancpain’s dive watch mastery. First introduced in 2015, this configuration has become a favorite among collectors seeking both performance and precious materials.

The warm tone of the Sedna Gold case contrasts beautifully with the black dial and bezel insert, delivering a sophisticated aesthetic while remaining unmistakably tool-oriented. At 43mm, the case offers strong wrist presence, balanced by a slim profile and thoughtful proportions.

Designed for real-world use, this Bathyscaphe is water-resistant to 300 meters, making it as capable beneath the surface as it is elegant on land.

Powering the watch is Blancpain’s highly regarded automatic Calibre 1315 (commonly referenced as calibre 315), known for its robustness and exceptional autonomy.

A key highlight is Blancpain’s secured movement system—an innovation designed to protect delicate components during time and date setting. This enhances long-term reliability and precision, underscoring Blancpain’s reputation for serious watchmaking beyond aesthetics.
120-hour (5-day) power reserve
35 jewels

The sunburst black dial features clean baton hour markers and a discreet date window, ensuring excellent legibility while maintaining visual balance. A sapphire crystal provides durability and clarity in all conditions.

Completing the watch is a black sail-canvas strap, rubber-lined for comfort and water resistance, secured by an 18k Sedna Gold pin buckle—a subtle but luxurious finishing touch.

Key Features & Highlights

• 18k Sedna Gold case with professional dive specifications
• Sunburst black dial with baton hour markers
• In-house Blancpain automatic movement
• Exceptional 120-hour power reserve
• Secured movement technology for enhanced reliability
• 300m water resistance
• Luxury sail-canvas strap, rubber-lined for comfort

Why This Bathyscaphe Belongs in Your Collection

The Blancpain Fifty Fathoms Bathyscaphe Sedna Gold is a rare blend of heritage, innovation, and luxury. It appeals to collectors who value Blancpain’s historic role in dive watch development, while offering the refinement and exclusivity of precious metal construction.

A compelling alternative to mainstream luxury sports watches, this Bathyscaphe stands apart through authenticity, technical credibility, and timeless design.

Specifications

• Brand: Blancpain
• Model: Fifty Fathoms Bathyscaphe
• Reference: 5000-36S30-B52 A
• Year: 2021
• Condition: Pre-owned, Excellent
• Case Diameter: 43.0 mm
• Case Thickness: 13.4 mm
• Case Material: 18k Sedna Gold
• Dial: Sunburst black with baton hour markers
• Crystal: Sapphire
• Movement: Automatic, Blancpain Calibre 1315
• Power Reserve: Approx. 120 hours
• Jewels: 35
• Functions: Hours, minutes, seconds, date
• Strap: Black sail-canvas (rubber-lined)
• Clasp: 18k Sedna Gold pin buckle
• Water Resistance: 300 meters
• Scope of Delivery: Watch, original box, and papers
• Gender: Men
• Origin: Switzerland