Seiko Cal. 6668 - 726

The 6668-726 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6668 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-53bd567f16a2]

Also known as: Bullhead, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1986

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