Seiko Cal. 6697 - 645

The 6697-645 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6697 caliber with 23j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-5bfdf9ab47d3]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1971

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