Seiko Cal. 6633 - 304

The Seiko 6633-304 represents an important milestone in Seiko's 1976 lineup. Powered by the 6633 caliber with 28j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-f9caa6d9a25a]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1976

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