Seiko Cal. 4437 - 728

The Seiko 4437-728 represents an important milestone in Seiko's 1994 lineup. With its 18mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-5b90c4108c28]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1994

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