Seiko Cal. 5641 - 561

Released in 1979, the Cal. 5641 with design code 561 was part of Seiko's domestic market collection. Powered by the 5641 caliber with 24j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-c53e4154f6e8]

Also known as: Samurai, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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