Seiko Cal. 6691 - 660

Released in 1996, the Cal. 6691 with design code 660 was part of Seiko's domestic market collection. Powered by the 6691 caliber with 35j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-b2c6f33ad77e]

Also known as: Monster, Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1996

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