Seiko Cal. 3831 - 421

Seiko 3831-421

The 3831-421 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-94e21427fe20]

Also known as: Turtle, Rally

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
190m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1965

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