Seiko Cal. 6331 - 178

Released in 1973, the Cal. 6331 with design code 178 was part of Seiko's domestic market collection. With its 22mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-26fdd4cc1f55]

Also known as: Crown, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1973

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