Seiko Cal. 6691 - 757

The Seiko 6691-757 represents an important milestone in Seiko's 1989 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-424548812fc9]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1989

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