Seiko Cal. 3851 - 841

Seiko 3851-841

This Spring Drive model from 1996 features a 41mm PVD Black case. Powered by the 3851 caliber with 23j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-d2d3e644b7a1]

Also known as: Helmet, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
41mm
Case Thickness
12.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
160m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1996

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