Seiko Cal. 4420 - 916

The Seiko 4420-916 represents an important milestone in Seiko's 1971 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-9146af780f5c]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1971

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