Seiko Cal. 4428 - 645

The 4428-645 is a sought-after Quartz piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-718f881e24ad]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1985

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