Seiko Cal. 3831 - 723

Seiko 3831-723

The 3831-723 is a sought-after Automatic piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-7536ae79a283]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
42mm
Case Thickness
8.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
100m
Dial Color
Black
Jewels
33j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1991

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