Seiko Cal. 5648 - 557

The Seiko 5648-557 represents an important milestone in Seiko's 1967 lineup. Powered by the 5648 caliber with 25j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-03879ceb585e]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1967

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