Seiko Cal. 6643 - 245

The Seiko 6643-245 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-b0ed313862e9]

Also known as: Rally, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1987

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