Seiko Cal. 6640 - 212

The 6640-212 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6640 caliber with 20j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-512a4b506bda]

Also known as: Samurai, Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1999

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