Seiko Cal. 3897 - 691

The Seiko 3897-691 represents an important milestone in Seiko's 1967 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-d90c251ad0bb]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1967

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