Seiko Cal. 5621 - 583

This Hand-Winding model from 1981 features a 40mm Titanium case. With its 19mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-b6a296afd1fa]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1981

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