Seiko Cal. 6643 - 512

The Seiko 6643-512 represents an important milestone in Seiko's 1997 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-506372ba0f1b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1997

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