Seiko Cal. 0713 - 237

This Spring Drive model from 1977 features a 41mm PVD Black case. Powered by the 0713 caliber with 22j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-f6c729d627ea]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1977

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