Seiko Cal. 5647 - 178

The Seiko 5647-178 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-d3d64cbf52cd]

Also known as: Turtle, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1977

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