Seiko Cal. 4431 - 821

The 4431-821 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-523eea174bea]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1998

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