Seiko Cal. 6691 - 435

The Seiko 6691-435 represents an important milestone in Seiko's 1973 lineup. Powered by the 6691 caliber with 18j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-f623319bbe0f]

Also known as: Silverwave, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1973

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