Seiko Cal. 4427 - 309

The 4427-309 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-bcf02eaa997c]

Also known as: Rally, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1967

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