Seiko Cal. 6690 - 734

This Spring Drive model from 1987 features a 42mm PVD Black case. Powered by the 6690 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-e92e9c338930]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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