Seiko Cal. 5691 - 490

The Seiko 5691-490 represents an important milestone in Seiko's 1969 lineup. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-cf65f1f667ac]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1969

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