Seiko Cal. 7157 - 113

This Spring Drive model from 1978 features a 34mm PVD Black case. Powered by the 7157 caliber with 33j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-8e9853cec50b]

Also known as: Bullhead, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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