Seiko Cal. 5681 - 456

This Spring Drive model from 1966 features a 44mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-f16eae4cbed5]

Also known as: Samurai, Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1966

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