Seiko Cal. 7139 - 858

This Hand-Winding model from 1970 features a 45mm Titanium case. Powered by the 7139 caliber with 20j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-772715621626]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1970

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