Seiko Mod Black Bay 58 – 40mm

Inspired by the timeless design of the Tudor Black Bay 58, this Seiko Mod combines vintage dive-watch styling with modern reliability and everyday versatility. Designed for enthusiasts who appreciate clean proportions and a classic no-date aesthetic, this build delivers a refined look powered by Seiko’s trusted NH35 automatic movement.

✨ Key Features

Premium Stainless Steel Construction
Crafted from high-quality 316L/904L stainless steel, offering durability, corrosion resistance, and a refined premium finish.

Reliable NH35 Automatic Movement
Powered by Seiko’s dependable NH35 automatic caliber:

• Smooth sweeping seconds hand
• Hacking & hand-winding capability
• ~41-hour power reserve
• Proven reliability and easy servicing

Vintage-Inspired Dive Bezel
Unidirectional rotating bezel with an aluminum or ceramic insert, delivering the iconic Black Bay-inspired aesthetic with precise tactile feedback.

Sapphire Crystal
Highly scratch-resistant sapphire crystal for excellent durability and long-lasting clarity.

Clean No-Date Aesthetic
Minimalist dial layout without a date window, preserving the balanced and symmetrical vintage-inspired look.

 

📏 Specifications

• Case Diameter: 40 mm
• Thickness: ~13 mm
• Lug Width: 20 mm
• Case Material: 316L / 904L Stainless Steel
• Bracelet Options: Rivet-style steel bracelet, rubber strap, leather strap, or NATO
• Bezel: Unidirectional dive bezel
• Crystal: Sapphire
• Movement: NH35 Automatic
• Water Resistance: 10 atm (build dependent)
• Power Reserve: ~41 hours

 

⌚ Dial & Functionality

Vintage Matte Dial
Clean and timeless dial inspired by the Black Bay 58 aesthetic, designed for versatility and everyday wear.

Snowflake Hands
Signature Tudor-inspired handset providing strong visual identity and excellent readability.

High-Legibility Lume
Bright luminous markers and hands for visibility in low-light environments.

Symmetrical No-Date Layout
Balanced dial presentation without a date complication for a pure tool-watch appearance.

Precision Timing Bezel
Track elapsed time easily whether diving, traveling, or timing daily activities.

 

🌟 Why Choose This Seiko Mod Black Bay 58?

This build captures the essence of the legendary Black Bay style while maintaining the reliability and practicality of Seiko’s NH35 automatic movement. With its versatile 40mm size, no-date symmetry, and vintage-inspired design, it’s the perfect everyday diver for collectors, enthusiasts, and anyone looking for a bold yet timeless watch.