Seiko Cal. 6686 - 691

Released in 1967, the Cal. 6686 with design code 691 was part of Seiko's domestic market collection. With its 19mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-e1be5923bbe9]

Also known as: Crown, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1967

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