Seiko Cal. 0731 - 291

This Solar model from 1970 features a 41mm PVD Black case. Powered by the 0731 caliber with 18j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-3df1e470e97d]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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