Seiko Cal. 6690 - 181

This Kinetic model from 1976 features a 40mm Hardlex-Coated Steel case. Powered by the 6690 caliber with 20j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-f001b37a4cb9]

Also known as: Bellmatic, Crown

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1976

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