Seiko Cal. 4433 - 721

The 4433-721 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4433 caliber with 21j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-2f36fbe2aac3]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1978

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