Seiko Cal. 4446 - 320

The Seiko 4446-320 represents an important milestone in Seiko's 1981 lineup. Powered by the 4446 caliber with 32j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-8803cd8a87de]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1981

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