Seiko Cal. 6655 - 666

Released in 1976, the Cal. 6655 with design code 666 was part of Seiko's domestic market collection. Powered by the 6655 caliber with 25j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-d8e797ff63e6]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1976

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