Seiko Cal. 6640 - 457

The 6640-457 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6640 caliber with 32j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-f6fcfc3dcc35]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1970

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