Seiko Cal. 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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