Seiko Cal. 7128 - 399

The 7128-399 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7128 caliber with 18j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-ca21e8d1df39]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1973

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