Seiko Cal. 3831 - 581

Seiko 3831-581

The Seiko 3831-581 represents an important milestone in Seiko's 1985 lineup. Powered by the 3831 caliber with 36j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-f871da4be241]

Also known as: Tuna, Emperor

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
39mm
Case Thickness
10.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
70m
Dial Color
Green
Jewels
36j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1985

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