Seiko Cal. 6690 - 393

The 6690-393 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6690 caliber with 21j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-01714fc88bf5]

Also known as: Turtle, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1998

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