Seiko Cal. 6641 - 784

Released in 1970, the Cal. 6641 with design code 784 was part of Seiko's domestic market collection. Powered by the 6641 caliber with 18j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-f9ea61bcc1bd]

Also known as: World Timer, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1970

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