Seiko Cal. 7128 - 371

This Hand-Winding model from 1986 features a 37mm PVD Black case. Powered by the 7128 caliber with 30j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-f8e22fd0bd51]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1986

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