Seiko Cal. 6642 - 115

The Seiko 6642-115 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-e2a967b3c781]

Also known as: Crown, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1978

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