Seiko Cal. 6633 - 901

The 6633-901 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6633 caliber with 24j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-cc7074412d28]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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