Seiko Cal. 4428 - 645

This Quartz model from 1990 features a 42mm Gold-Plated case. Powered by the 4428 caliber with 27j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-5136566d47a0]

Also known as: Tuna, Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1990

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