Seiko Cal. 6641 - 290

The Seiko 6641-290 represents an important milestone in Seiko's 1970 lineup. Powered by the 6641 caliber with 27j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-b12621d91422]

Also known as: Samurai, Monster

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1970

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