Seiko Cal. 4428 - 106

This Quartz model from 1968 features a 38mm PVD Black case. Powered by the 4428 caliber with 35j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-8f54c3e7f046]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1968

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