Seiko Cal. 6640 - 477

The 6640-477 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6640 caliber with 23j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-6a98c4956aeb]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1970

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