Seiko Cal. 7137 - 136

The Seiko 7137-136 represents an important milestone in Seiko's 1988 lineup. Powered by the 7137 caliber with 25j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-bf1ac05621f4]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1988

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