Seiko Cal. 5657 - 712

The Seiko 5657-712 represents an important milestone in Seiko's 1966 lineup. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-6a8cd59048e8]

Also known as: Turtle, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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