Seiko Cal. 6690 - 488

The Seiko 6690-488 represents an important milestone in Seiko's 1988 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-1e1d9bdde0f3]

Also known as: Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1988

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