Seiko Cal. 6663 - 303

The Seiko 6663-303 represents an important milestone in Seiko's 1991 lineup. Powered by the 6663 caliber with 29j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-75ca1e9b9164]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1991

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