Seiko Cal. 4431 - 935

Seiko 4431-935

The Seiko 4431-935 represents an important milestone in Seiko's 1965 lineup. Powered by the 4431 caliber with 23j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-8425cc3b7b80]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
12.9mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Champagne
Jewels
23j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1965

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seikata-wm-8425cc3b7b80