Seiko Cal. 3893 - 420

This Hand-Winding model from 1977 features a 45mm Hardlex-Coated Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-d48aaa4a814b]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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