Seiko Cal. 7163 - 521

The 7163-521 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7163 caliber with 24j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-03d8742932bf]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1984

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