Bold, refined, and engineered for precision — the Seiko Mod Deep Sea | Blue showcases a deep ocean-inspired aesthetic with standout performance. Featuring a vivid blue dial and a transparent exhibition case back, this 40 mm timepiece blends modern dive-watch styling with reliable craftsmanship.

Constructed from corrosion-resistant 316L stainless steel and powered by the dependable NH35 automatic movement, this watch delivers smooth accuracy and versatile everyday wear. The Deep Sea Blue configuration makes a confident statement on the wrist, whether worn casually or paired with formal attire.

Specifications

Case Diameter: 40 mm 
Case Thickness: 13 mm
Glass: Scratch-resistant sapphire crystal (front and back)
Material: 316L stainless steel – tarnish and corrosion-resistant
Movement: NH35 Automatic (TMI) – dependable accuracy and long-term reliability
Bezel: Premium ceramic with blue ruby accents – scratch and fade-resistant
Bracelet: Adjustable Jubilee or Oyster-inspired bracelet
Case Back: Transparent exhibition back

In the Box

• 1 × Modified Watch
• Watch Box
• Tool Kit

All watches are assembled by hand. Please allow 3–5 business days (excluding weekends) for assembly prior to shipment. During peak periods, processing times may extend slightly.

Disclaimer: VVS Jewelry operates independently and is not affiliated with Seiko, Omega, or any other watch brand. All components and movements are newly sourced from independent specialist suppliers