Seiko Cal. 4527 - 946

The 4527-946 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4527 caliber with 36j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-7ea5aef832f2]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1984

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