Seiko Cal. 4437 - 632

Released in 1977, the Cal. 4437 with design code 632 was part of Seiko's domestic market collection. With its 19mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-c4c2be8eb9a8]

Also known as: Samurai, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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