Seiko Cal. 5231 - 561

This Quartz model from 1966 features a 43mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-a5e5d5b96ae3]

Also known as: Monster, Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1966

Related Models

• Seiko 0755-779
• Seiko 3852-945
• Seiko 6116-424
• Seiko 3852-247
• Seiko 0712-533
• Seiko 4496-833
• Seiko 6653-233
• Seiko 6388-932
• Seiko 0780-896
• Seiko 7127-633
• Seiko 4464-963
• Seiko 5297-157