Seiko Cal. 4528 - 987

The 4528-987 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4528 caliber with 19j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-fe091d2ce65d]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1977

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