Seiko Cal. 6642 - 531

The 6642-531 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6642 caliber with 26j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-5b8a8176c5f7]

Also known as: Crown, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

26j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1987

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