Seiko Cal. 6643 - 757

The Seiko 6643-757 represents an important milestone in Seiko's 1987 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-869d3099d9e2]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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