Seiko Cal. 3831 - 440

Seiko 3831-440

This Spring Drive model from 1985 features a 38mm Titanium case. Powered by the 3831 caliber with 29j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-826e59547a2f]

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
38mm
Case Thickness
12.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
170m
Dial Color
Black
Jewels
29j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1985

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