Seiko Cal. 4445 - 727

This Quartz model from 1979 features a 45mm PVD Black case. Powered by the 4445 caliber with 23j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-0ea4f28a22fa]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1979

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