Seiko Cal. 6648 - 557

This Hand-Winding model from 1973 features a 38mm PVD Black case. With its 19mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-b27a5b0f083d]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1973

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