Seiko Cal. 6640 - 483

The 6640-483 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6640 caliber with 17j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-39bd77cae638]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1981

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