Seiko Cal. 6640 - 503

The Seiko 6640-503 represents an important milestone in Seiko's 1984 lineup. Powered by the 6640 caliber with 35j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-941b97ec621d]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1984

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