Seiko Cal. 7139 - 464

This Hand-Winding model from 1971 features a 42mm Stainless Steel case. Powered by the 7139 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-0f6cf0c46400]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1971

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