Seiko Cal. 5648 - 672

Seiko 5648-672

The Seiko 5648-672 represents an important milestone in Seiko's 1972 lineup. Powered by the 5648 caliber with 18j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-00ee15084bf9]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
14.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Burgundy
Jewels
18j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1972

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