Seiko Cal. 3860 - 718

Seiko 3860-718

This Automatic model from 1977 features a 44mm Titanium case. Powered by the 3860 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-9d635331a78d]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
9.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Silver
Jewels
20j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1977

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seikata-wm-9d635331a78d