Seiko Cal. 4423 - 632

The 4423-632 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4423 caliber with 27j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-d9b0153bba36]

Also known as: Shogun, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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