Seiko Cal. 6690 - 187

This Spring Drive model from 1980 features a 46mm Stainless Steel case. Powered by the 6690 caliber with 17j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-addb5086bdaa]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1980

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