Seiko Cal. 6690 - 604

The 6690-604 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6690 caliber with 29j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-add2e23e9059]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1995

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