Seiko Cal. 7139 - 340

Released in 1975, the Cal. 7139 with design code 340 was part of Seiko's domestic market collection. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-e3ef319ad103]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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