Seiko Cal. 3857 - 866

The Seiko 3857-866 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-6705ba12143b]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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