Seiko Cal. 6331 - 697

The Seiko 6331-697 represents an important milestone in Seiko's 1984 lineup. With its 21mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-40591e85a1b1]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1984

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