Seiko Cal. 6690 - 391

This Automatic model from 1980 features a 37mm Titanium case. Powered by the 6690 caliber with 24j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-37e1474d42fa]

Also known as: Rally, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1980

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