Seikomariner Black

Seiko Mod GMT – Timeless Design, Modern Precision

Inspired by the legendary GMT silhouette, this Seiko Mod GMT combines refined aesthetics with technical excellence. Powered by the Seiko NH34 automatic movement, it delivers unmatched reliability and a fully functional dual-time feature — perfect for those who value both style and substance.

Specifications:

• Case Diameter: 40 mm (excluding crown)
• Movement: Seiko NH34 Automatic (GMT function)
• Thickness: 12 mm
• Crystal: Sapphire, scratch-resistant with anti-reflective coating
• Lume: Super-Luminova for enhanced low-light visibility
• Case Material: 316L stainless steel
• Crown: Screw-down
• Bezel: Polished ceramic insert
• Bracelet: 316L stainless steel with secure clasp
• Lug Width: 20 mm
• Wrist Fit: Adjustable from 14.5 cm to 22 cm
• Case Back: Exhibition crystal or solid steel (depending on model)
• Water Resistance: 3 ATM / 30 meters
• GMT Function: Fully operational dual-time display