Seiko Cal. 4521 - 987

The 4521-987 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4521 caliber with 29j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-c89ca8e86c91]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1985

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