Seiko Cal. 4428 - 187

The Seiko 4428-187 represents an important milestone in Seiko's 1973 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-80e7a85a4edb]

Also known as: Silverwave, Flighty

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1973

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