Seiko Cal. 3891 - 406

The Seiko 3891-406 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9db0289386e7]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1969

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