Seiko Cal. 3861 - 720

Seiko 3861-720

This Quartz model from 1988 features a 43mm Hardlex-Coated Steel case. Powered by the 3861 caliber with 20j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-43b3e12bfa64]

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
8.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
White
Jewels
20j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1988

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