Seiko Cal. 4428 - 642

The 4428-642 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-9d641e3fc8fc]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1984

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