Seiko Cal. 4442 - 628

The Seiko 4442-628 represents an important milestone in Seiko's 1985 lineup. Powered by the 4442 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-2c067a3a1b98]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1985

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