Seiko Cal. 6668 - 310

The Seiko 6668-310 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-9072a64a2c66]

Also known as: Pogue, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1968

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