Seiko Cal. 3831 - 987

Seiko 3831-987

The 3831-987 is a sought-after Quartz piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-430741ad0eac]

Also known as: Sumo, UFO

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
38mm
Case Thickness
13.4mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Champagne
Jewels
35j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1988

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