Seiko Cal. 6643 - 287

The Seiko 6643-287 represents an important milestone in Seiko's 1988 lineup. It features a Cream dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-a9d45dd3fed5]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1988

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