Seiko Cal. 7128 - 420

The 7128-420 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7128 caliber with 34j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-dc7f3975b102]

Also known as: Samurai, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1976

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