Seiko Cal. 6658 - 761

The Seiko 6658-761 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-bd483622d97a]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1966

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