Seiko Cal. 6690 - 587

The 6690-587 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6690 caliber with 18j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-eac1d9e8bb9b]

Also known as: Turtle, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1983

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