Seiko Cal. 6663 - 397

The Seiko 6663-397 represents an important milestone in Seiko's 1970 lineup. Powered by the 6663 caliber with 31j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-2573b1b0dfb0]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1970

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