Seiko Cal. 6642 - 780

The 6642-780 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6642 caliber with 20j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-9a714fe48745]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1975

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