Seiko Cal. 6631 - 863

The 6631-863 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6631 caliber with 34j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-1a867c80248d]

Also known as: Crown, Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1965

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