Seiko Cal. 3881 - 340

This Spring Drive model from 1971 features a 40mm PVD Black case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-bcd2b8b0f4d7]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1971

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