Seiko Cal. 6690 - 653

The Seiko 6690-653 represents an important milestone in Seiko's 1970 lineup. Powered by the 6690 caliber with 27j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-d3ecdd7e3fc6]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1970

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