Seiko Cal. 5648 - 990

Seiko 5648-990

The 5648-990 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5648 caliber with 28j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-d4d60510df4a]

Also known as: Crown, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
35mm
Case Thickness
14.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Cream
Jewels
28j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1986

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