Seiko Cal. 5649 - 831

Seiko 5649-831

The 5649-831 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-12b464349ece]

Also known as: Arnie, Flighty

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Black
Jewels
25j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1979

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