Seiko Cal. 6663 - 961

The Seiko 6663-961 represents an important milestone in Seiko's 1975 lineup. Powered by the 6663 caliber with 33j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-f2dd7caaa107]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1975

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