Seiko Cal. 4437 - 358

The Seiko 4437-358 represents an important milestone in Seiko's 1967 lineup. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-86dceefeb4f6]

Also known as: Monster, Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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