Seiko Cal. 7131 - 435

The Seiko 7131-435 represents an important milestone in Seiko's 1967 lineup. Powered by the 7131 caliber with 26j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-52192a40bb67]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1967

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