Seiko Cal. 6656 - 772

The Seiko 6656-772 represents an important milestone in Seiko's 1973 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-10742f4f3aa9]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1973

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