Seiko Cal. 4423 - 397

This Hand-Winding model from 1965 features a 41mm Two-Tone case. Powered by the 4423 caliber with 17j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-3f54f9f286e4]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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