Seiko Cal. 4440 - 891

Seiko 4440-891

This Hand-Winding model from 1975 features a 46mm PVD Black case. With its 20mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-7cb9a5380fb9]

Also known as: Helmet

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
46mm
Case Thickness
15.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
150m
Dial Color
White
Jewels
24j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1975

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