Seiko Cal. 4521 - 280

The Seiko 4521-280 represents an important milestone in Seiko's 1991 lineup. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-dbf74e6aa741]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1991

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