Seiko Cal. 3867 - 731

Seiko 3867-731

This Automatic model from 1987 features a 46mm PVD Black case. Powered by the 3867 caliber with 31j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-edcaeecb138e]

Also known as: Turtle, Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
46mm
Case Thickness
8.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Silver
Jewels
31j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1987

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seikata-wm-edcaeecb138e