Seiko Cal. 5657 - 639

The Seiko 5657-639 represents an important milestone in Seiko's 1973 lineup. With its 19mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-0b56b6d002b2]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1973

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