Seiko Cal. 6690 - 730

The 6690-730 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6690 caliber with 33j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-22cd63fdf4f8]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1982

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