Seiko Cal. 3898 - 331

Seiko 3898-331

The 3898-331 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3898 caliber with 19j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-1b1d7387dddf]

Also known as: Turtle, Bullhead

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
35mm
Case Thickness
8.0mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
19j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1989

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