Seiko Cal. 6689 - 591

The Seiko 6689-591 represents an important milestone in Seiko's 1982 lineup. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-0e8fe37c25e8]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1982

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