Seiko Cal. 6643 - 309

This Automatic model from 1973 features a 42mm Gold-Plated case. Powered by the 6643 caliber with 21j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-89382fe89100]

Also known as: UFO, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1973

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