Seiko Cal. 6656 - 577

The Seiko 6656-577 represents an important milestone in Seiko's 1980 lineup. Powered by the 6656 caliber with 21j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-384567ad850d]

Also known as: Bullhead, Emperor

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1980

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