Seiko Cal. 7139 - 536

The Seiko 7139-536 represents an important milestone in Seiko's 1991 lineup. Powered by the 7139 caliber with 33j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-755988b3dfe0]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

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