Seiko Cal. 5689 - 540

This Hand-Winding model from 1987 features a 37mm Hardlex-Coated Steel case. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-b11ba4a9102b]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1987

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