Seiko Cal. 7131 - 435

Seiko 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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