Seiko Cal. 6610 - 551

The Seiko 6610-551 represents an important milestone in Seiko's 1967 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-3816f4d764df]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1967

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