Seiko Cal. 6684 - 641

Released in 1969, the Cal. 6684 with design code 641 was part of Seiko's domestic market collection. Powered by the 6684 caliber with 31j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-fd1ab5b2888f]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1969

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