Seiko Cal. 0731 - 140

This Hand-Winding model from 1976 features a 42mm Gold-Plated case. Powered by the 0731 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-7791b9903456]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1976

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