Seiko Cal. 3899 - 957

The 3899-957 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3899 caliber with 19j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-74a8f7914860]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1974

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