Seiko Cal. 3864 - 150

The Seiko 3864-150 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-cdeace1a0d26]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1980

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