The Blancpain Fifty Fathoms Bathyscaphe reference 5000-36S30-B52 A represents the pinnacle of what a luxury dive watch can be — a watch equally at home 300 metres beneath the surface as it is at the finest table in the world. The 43mm case is crafted from Sedna gold, Blancpain's proprietary rose gold alloy of exceptional durability and warmth, presenting a richness wholly distinct from the cold neutrality of steel.
The matte black unidirectional ceramic bezel is set with Ceragold hour markers — gold inlaid directly into the ceramic through a technically demanding process that eliminates the risk of marker degradation over time. Beneath the black dial, applied rose gold indices and luminous hands ensure deep-water legibility. The in-house Caliber 1315 automatic movement beats behind a silicon hairspring for outstanding anti-magnetic resistance, delivering a full five-day (120-hour) power reserve from 35 jewels. Offered with both a black rubber strap with red interior and an extra-durable black sailcloth strap, providing two distinct wearing options. Presented in Excellent pre-owned condition with original box and papers, 2023.

Key Features
• Luxurious 43mm Sedna gold case
• Professional-grade ceramic dive bezel
• In-house Caliber 1315
• Exceptional 5-day power reserve
• Anti-magnetic silicon hairspring
• Black dial with rose gold accents
• Includes rubber + sailcloth straps
• Sapphire crystal
• Iconic Blancpain dive watch heritage

A Modern Luxury Dive Watch

The Blancpain Fifty Fathoms Bathyscaphe combines tool-watch functionality with elevated finishing.

Its black dial features:

• Applied rose gold indices
• Luminous hands for legibility
• Clean, balanced symmetry

The matte ceramic bezel with Ceragold markers enhances durability while preserving a luxurious appearance.

Exceptional In-House Movement

Inside the watch beats the highly respected Caliber 1315, developed and manufactured by Blancpain.

Movement highlights include:

• 5-day (120-hour) power reserve
• Automatic winding
• 35 jewels
• Silicon hairspring for anti-magnetism
• Proven long-term reliability
 

Product Specifications

• Brand: Blancpain
• Model: Blancpain Fifty Fathoms Bathyscaphe
• Reference: 5000-36S30-B52 A
• Year: 2023
• Condition: Pre-Owned – Excellent
• Case Material: Sedna Gold
• Case Diameter: 43 mm
• Case Thickness: 13.4 mm
• Lug-to-Lug: 49.6 mm
• Lug Width: 23 mm
• Bezel: Unidirectional Ceramic with Ceragold Markers
• Crystal: Sapphire
• Dial: Black with Rose Gold Indices

• Strap 1: Black Rubber (Red Interior)
• Strap 2: Durable Black Sailcloth

• Clasp: Pin Buckle / Folding Clasp (depending on configuration)

• Water resistance: 300m / 3 ATM

• Movement: Automatic
• Calibre: 1315
• Jewels: 35
• Power Reserve: 5 Days / 120 Hours

Functions:
• Hours
• Minutes
• Seconds

Why Collectors Love This Model
• Premium Sedna gold construction
• Legendary Fifty Fathoms heritage
• Exceptional 5-day movement
• High-performance ceramic bezel
•Luxurious yet highly wearable sports watch