Seiko Cal. 6650 - 717

Released in 1971, the Cal. 6650 with design code 717 was part of Seiko's domestic market collection. With its 18mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-a29fc455ee6b]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1971

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