Seiko Cal. 6688 - 777

This Quartz model from 1970 features a 44mm PVD Black case. With its 20mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-19afbd015c95]

Also known as: Sumo, Rally

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1970

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