Seiko Cal. 3860 - 820

Seiko 3860-820

This Spring Drive model from 1981 features a 44mm Gold-Plated case. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-cd8ee8b3ed44]

Also known as: Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
9.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Silver
Jewels
19j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1981

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