Seiko Cal. 7139 - 730

The Seiko 7139-730 represents an important milestone in Seiko's 1967 lineup. Powered by the 7139 caliber with 23j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-a1736d4d2c43]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1967

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