Seiko Cal. 6140 - 638

The Seiko 6140-638 represents an important milestone in Seiko's 1974 lineup. With its 21mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-2d8c729dc9a8]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1974

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