Seiko Cal. 7139 - 830

This Spring Drive model from 1979 features a 42mm Titanium case. Powered by the 7139 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-3ae4a88e3871]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1979

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