Seiko Cal. 3866 - 575

The Seiko 3866-575 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-02ecde4cc760]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1977

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