Seiko Cal. 3871 - 364

Seiko 3871-364

This Automatic model from 1979 features a 37mm PVD Black case. Powered by the 3871 caliber with 19j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-fac6e1b946c1]

Also known as: Turtle, Sumo

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
37mm
Case Thickness
9.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
80m
Dial Color
Silver
Jewels
19j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1979

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