Seiko Cal. 5648 - 337

The Seiko 5648-337 represents an important milestone in Seiko's 1976 lineup. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-a55078bc1421]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1976

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