Seiko Cal. 6642 - 535

The Seiko 6642-535 represents an important milestone in Seiko's 1977 lineup. With its 18mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-86d33945d8c8]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

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