Seiko Cal. 4448 - 815

This Spring Drive model from 1975 features a 37mm PVD Black case. With its 22mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-9c7f1c1b6629]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1975

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