Seiko Cal. 5647 - 316

The Seiko 5647-316 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-25754608dae7]

Also known as: Sea Horse, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1979

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