Seiko Cal. 4427 - 820

The Seiko 4427-820 represents an important milestone in Seiko's 1986 lineup. It features a Navy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-03c6f44f7672]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1986

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