Seiko Cal. 0737 - 427

The Seiko 0737-427 represents an important milestone in Seiko's 1988 lineup. With its 18mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-9c2219e0a7f3]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1988

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