Seiko Cal. 4436 - 921

This Hand-Winding model from 1978 features a 37mm PVD Black case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3e84ff48ab6f]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1978

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