Seiko Cal. 6646 - 812

The Seiko 6646-812 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-eac843102ae8]

Also known as: Sumo, Rally

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1976

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