Seiko Cal. 6643 - 440

The 6643-440 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-dcee0fe86af0]

Also known as: Monster, UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1968

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