Seiko Cal. 6644 - 861

This Quartz model from 1971 features a 37mm PVD Black case. With its 20mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-5ebb9f03c9d9]

Also known as: Emperor, Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1971

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