Seiko Cal. 6640 - 497

The 6640-497 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6640 caliber with 17j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-cf262b5211b0]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1999

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