Seiko Cal. 5648 - 178

The Seiko 5648-178 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-838d9b160df0]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1966

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