Seiko Cal. 4421 - 628

This Quartz model from 1980 features a 38mm Titanium case. Powered by the 4421 caliber with 22j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-c6916d867e71]

Also known as: Tuna, Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1980

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