Seiko Cal. 3831 - 612

Seiko 3831-612

The 3831-612 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3831 caliber with 30j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-2aeee3f567b0]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
9.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Cream
Jewels
30j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1966

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