Seiko Cal. 6643 - 803

The 6643-803 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6643 caliber with 33j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-73386fe8be8c]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1995

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