Seiko Cal. 4440 - 540

This Hand-Winding model from 1983 features a 40mm Titanium case. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-3b1675d755f7]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1983

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