Seiko Cal. 4437 - 928

The Seiko 4437-928 represents an important milestone in Seiko's 1987 lineup. With its 21mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-03bb5f9e36ac]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1987

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