Blancpain Fifty Fathoms Bathyscaphe Automatic Blue Dial

Product Overview

The Blancpain Fifty Fathoms Bathyscaphe Automatic Blue Dial Men’s Watch 5100-1140-O52A embodies a legacy of professional diving excellence while delivering modern refinement and technical precision. As part of Blancpain’s iconic Fifty Fathoms Bathyscaphe line, this timepiece honors the brand’s pioneering role in underwater exploration, originally developed in collaboration with early divers and naval forces. Today, it stands as a symbol of enduring craftsmanship and functional design. Built for men who appreciate both performance and aesthetics, this watch seamlessly transitions from ocean depths to urban environments. Its automatic movement ensures reliable timekeeping without battery dependency, while the robust stainless steel construction and advanced materials offer resilience in challenging conditions. Whether worn during recreational diving, daily commutes, or formal occasions, the 5100-1140-O52A delivers consistent performance and understated elegance. This is not merely a watch—it’s a testament to Blancpain’s commitment to horological innovation and real-world usability.

Key Features

• Luminous Blue Dial with Grey Hands: The deep blue dial provides a striking visual contrast, while the luminous grey hands ensure clear legibility in low-light settings, including underwater or nighttime use. The luminescence activates quickly and remains visible for extended periods, a critical feature for divers tracking time in dark environments.
• Silver-Tone Stainless Steel Case: Precision-crafted from high-grade stainless steel, the case offers a polished finish that resists corrosion and daily wear. Its 38 mm diameter and 11 mm thickness strike a balanced profile—substantial enough to convey strength, yet refined for comfortable all-day wear.
• Blue Textile Band with Rubber Backing: The 20 mm wide band combines a durable textile exterior with a soft rubber underside, enhancing comfort and grip. This dual-layer design wicks moisture away from the skin and maintains a secure fit during swimming, diving, or active pursuits, while also providing a stylish, sport-oriented look.
• Automatic Movement: Powered by the natural motion of the wearer’s wrist, the self-winding mechanism eliminates the need for battery replacements. This mechanical heart ensures long-term reliability and reflects Blancpain’s expertise in traditional watchmaking.
• 300 Meters Water Resistance: Engineered to withstand pressures at 1000 feet below the surface, this watch is suitable for recreational scuba diving, snorkeling, and extended water exposure. The robust sealing system protects internal components from moisture and pressure.
• Uni-Directional Rotating Bezel with Coin Edge: The bezel rotates only counterclockwise, preventing accidental overestimation of dive times—a vital safety feature. Its coin-edge texture allows for easy manipulation, even when wearing dive gloves.
• Scratch-Resistant Sapphire Crystal: The front crystal is made from synthetic sapphire, one of the hardest transparent materials available. It resists scratches from sand, metal, and everyday impacts, preserving the dial’s clarity over years of use.
• Transparent Caseback: A clear sapphire window on the back reveals the intricate automatic movement, showcasing the fine finishing and precision engineering that define Blancpain’s artisanal approach.
• Screw-Down Crown: This sealed crown design prevents water from entering the case during submersion, contributing significantly to the watch’s overall water resistance and durability.
• Tang Clasp: The secure tang clasp allows for precise adjustment and a firm hold, ensuring the watch remains in place during movement, sport, or underwater activity.

Technical Specifications

• Case Size: 38 mm x 11 mm
• Band Width: 20 mm
• Band Length: Long
• Water Resistance: 300 meters / 1000 feet
• Movement: Automatic
• Crystal: Scratch Resistant Sapphire
• Bezel: Uni-directional Rotating, Coin Edge
• Caseback: Transparent
• Crown: Screw Down
• Clasp: Tang
• Model Number: 5100-1140-O52A
• ASIN: B0796611Y8
• Department: Men’s
• Manufacturer: Blancpain
• Date First Available: March 13, 2019

Benefits & Use Cases

Designed for individuals who demand both form and function, this watch excels in environments where precision and durability are paramount. Its 300-meter water resistance and safety-focused unidirectional bezel make it a dependable tool for divers, while the luminous dial ensures readability in low visibility. The automatic movement offers consistent performance without maintenance beyond periodic servicing. The sapphire crystal protects against the harsh conditions of marine environments, including salt, sand, and impact. Meanwhile, the stainless steel case and textile-rubber band provide a versatile aesthetic—equally at home in a boardroom or on a dive boat. The transparent caseback adds a layer of mechanical intrigue, appealing to enthusiasts who value the artistry behind the instrument. Whether tracking elapsed dive time, navigating a busy day, or simply appreciating fine craftsmanship, the 5100-1140-O52A delivers with confidence.

Important Notes

Package dimensions are 12.2 x 10.25 x 6.75 inches and weigh 5.75 pounds. For warranty details, please refer to the manufacturer’s information provided with the product. This item is part of Blancpain’s Fifty Fathoms Bathyscaphe collection, a line with deep roots in professional diving history. Proper care, including rinsing after saltwater exposure and periodic servicing, is recommended to maintain performance and longevity.