Seiko Cal. 6610 - 991

The Seiko 6610-991 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-58bde767186c]

Also known as: Shogun, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1970

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