Seiko Cal. 6663 - 643

The 6663-643 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6663 caliber with 18j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-8aa22f8eb238]

Also known as: Crown, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1995

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