Seiko Cal. 7136 - 304

The Seiko 7136-304 represents an important milestone in Seiko's 1991 lineup. Powered by the 7136 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-dbd1b817ab37]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1991

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