Seiko Cal. 4463 - 637

The Seiko 4463-637 represents an important milestone in Seiko's 1973 lineup. Powered by the 4463 caliber with 32j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-0d26d27b5925]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1973

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