Seiko Cal. 4428 - 975

Released in 1989, the Cal. 4428 with design code 975 was part of Seiko's domestic market collection. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-2cca0eb927b8]

Also known as: Tuna, Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1989

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