Seiko Cal. 6633 - 977

The Seiko 6633-977 represents an important milestone in Seiko's 1991 lineup. Powered by the 6633 caliber with 35j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-9355931a4036]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1991

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