E Ink Carta was announced in January 2013 at International CES that is the fourth generation of its devices with 212 ppi pixel density .
Its devices features 768 by 1024 resolution on 6 - inch displays .
E Ink Carta was announced in January 2013 at International CES that is the fourth generation of its devices , which features 768 by 1024 resolution on 6 - inch displays , with 212 ppi pixel density .