Seiko Cal. 6688 - 742

The Seiko 6688-742 represents an important milestone in Seiko's 1989 lineup. Powered by the 6688 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-78fe016d9d33]

Also known as: Turtle, Shogun

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1989

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