Seiko Cal. 4448 - 428

This Kinetic model from 1981 features a 37mm Two-Tone case. Powered by the 4448 caliber with 18j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-2f54529c07da]

Also known as: World Timer, Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1981

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