Seiko Cal. 5690 - 439

The Seiko 5690-439 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-4a6bbd23a5d0]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1987

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