Seiko Cal. 0770 - 815

The Seiko 0770-815 represents an important milestone in Seiko's 1980 lineup. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-2ec08dda3aee]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1980

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