Seiko Cal. 0770 - 866

The Seiko 0770-866 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-e405fcc4b54b]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1981

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