Seiko Cal. 3866 - 640

Seiko 3866-640

This Quartz model from 1990 features a 40mm PVD Black case. Powered by the 3866 caliber with 25j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-90463773e874]

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
40mm
Case Thickness
12.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Cream
Jewels
25j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1990

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seikata-wm-90463773e874