Seiko Cal. 7159 - 638

The 7159-638 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7159 caliber with 26j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-768cd3414e96]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1990

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