... 3.The standard interface of sd card enables you to add books unlimitedly.4.Cute,Light and ... & g)(optional)" SD Card (up to 4GB, support SDHC)" Format support (with cyrillics supporting) PDF,TXT,CHM,FB2 ... of unit without battery:250g,weight of unite with package 950g incl.accessories included,pieces in ... of unit without battery:250g,weight of unite with package 950g incl.accessories included,pieces in ...