Seiko Cal. 7138 - 565

This Spring Drive model from 1986 features a 39mm PVD Black case. Powered by the 7138 caliber with 21j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-c93d95473bb3]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1986

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