Seiko Cal. 4490 - 910

This Hand-Winding model from 1976 features a 39mm Titanium case. Powered by the 4490 caliber with 18j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-f1fe3b6cb3ea]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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