Seiko Cal. 5690 - 231

The Seiko 5690-231 represents an important milestone in Seiko's 1973 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-083582cf3fa7]

Also known as: Samurai, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1973

Related Models

• Seiko 4454-217
• Seiko 3835-731
• Seiko 5676-744
• Seiko 7157-388
• Seiko 4412-541
• Seiko 0741-386
• Seiko 6652-292
• Seiko 7059-521
• Seiko 6156-964
• Seiko 7164-650
• Seiko 7092-699
• Seiko 5637-218