Seiko Cal. 5231 - 312

The Seiko 5231-312 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-f2c00f53f572]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1971

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