Seiko Cal. 4528 - 927

The 4528-927 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4528 caliber with 19j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-aff97fa59993]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1976

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