Seiko Cal. 5631 - 770

This Automatic model from 1974 features a 46mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-350d12fd8318]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1974

Related Models

• Seiko 6665-716
• Seiko 5625-797
• Seiko 3846-793
• Seiko 7028-517
• Seiko 6247-269
• Seiko 5219-881
• Seiko 4487-921
• Seiko 3837-458
• Seiko 6368-116
• Seiko 6132-888
• Seiko 6314-532
• Seiko 0752-725