Seiko Cal. 6331 - 788

The Seiko 6331-788 represents an important milestone in Seiko's 1975 lineup. With its 21mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-08baa90a27d6]

Also known as: Shogun, Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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