Seiko Cal. 0731 - 107

The Seiko 0731-107 represents an important milestone in Seiko's 1966 lineup. Powered by the 0731 caliber with 28j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-de7217cb6195]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1966

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