Seiko Cal. 6642 - 545

The Seiko 6642-545 represents an important milestone in Seiko's 1984 lineup. With its 20mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-aa0f043466f4]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1984

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