Seiko Cal. 6657 - 606

Released in 1972, the Cal. 6657 with design code 606 was part of Seiko's domestic market collection. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-aa6a98df1ca5]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1972

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