Seiko Cal. 6690 - 923

This Automatic model from 1975 features a 40mm PVD Black case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8ad4ce73fc3a]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1975

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