Seiko Cal. 6690 - 543

Released in 1966, the Cal. 6690 with design code 543 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-3a39e3b7e36a]

Also known as: Silverwave, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1966

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