Seiko Cal. 6690 - 990

The Seiko 6690-990 represents an important milestone in Seiko's 1990 lineup. Powered by the 6690 caliber with 25j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-e351dd2aa460]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1990

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