Seiko Cal. 6638 - 665

The 6638-665 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6638 caliber with 23j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-682d382f3ffe]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1990

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