Seiko Cal. 6653 - 257

This Quartz model from 1978 features a 40mm PVD Black case. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-f6fb89e378eb]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1978

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