Seiko Cal. 4428 - 320

The 4428-320 is a sought-after Solar piece from Seiko's golden era. Powered by the 4428 caliber with 36j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-6963a4809900]

Also known as: Monster, Silverwave

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1999

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