Seiko Cal. 3891 - 671

The Seiko 3891-671 represents an important milestone in Seiko's 1973 lineup. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-9d711bb87c77]

Also known as: Shogun, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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