Seiko Cal. 0731 - 401

This Hand-Winding model from 1976 features a 39mm PVD Black case. Powered by the 0731 caliber with 17j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-e52b7301c23d]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1976

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