Seiko Cal. 6656 - 180

The Seiko 6656-180 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-e58fb25a77a3]

Also known as: Samurai, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1978

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