Seiko Cal. 5231 - 964

Released in 1986, the Cal. 5231 with design code 964 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-9588312198a4]

Also known as: Bullhead, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1986

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