Seiko Cal. 4521 - 553

Released in 1979, the Cal. 4521 with design code 553 was part of Seiko's domestic market collection. With its 19mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-8147ac93ff71]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1979

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