Seiko Cal. 4447 - 963

The Seiko 4447-963 represents an important milestone in Seiko's 1975 lineup. Powered by the 4447 caliber with 35j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-471bc1c7d388]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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