Seiko Cal. 6643 - 692

The Seiko 6643-692 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-d2cd650be333]

Also known as: World Timer, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1981

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