Seiko Cal. 3856 - 397

The Seiko 3856-397 represents an important milestone in Seiko's 1970 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-bb0593890ff3]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1970

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