Seiko Cal. 5687 - 730

The Seiko 5687-730 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-f574fb6b1a86]

Also known as: Samurai, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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