Seiko Cal. 7131 - 902

The Seiko 7131-902 represents an important milestone in Seiko's 1972 lineup. Powered by the 7131 caliber with 35j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-00ed4c775ed0]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1972

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