Seiko Cal. 6691 - 554

The 6691-554 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6691 caliber with 27j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-0fe146cee7bf]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1970

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