Seiko Cal. 6647 - 913

Released in 1978, the Cal. 6647 with design code 913 was part of Seiko's domestic market collection. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-ca8ae09754bb]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1978

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