Seiko Cal. 4428 - 619

The Seiko 4428-619 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-7f9b99150f93]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1975

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