Seiko Cal. 6640 - 862

The 6640-862 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6640 caliber with 17j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-cfaeaaba7dc6]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1983

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