Seiko Cal. 4431 - 395

Seiko 4431-395

The Seiko 4431-395 represents an important milestone in Seiko's 1972 lineup. Powered by the 4431 caliber with 34j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-5ee579ed5e4c]

Also known as: Helmet, Arnie

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
12.2mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Silver
Jewels
34j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1972

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