... inch with speaker e book display 5 inch with speaker Unique screen: 5 inches display screen picture shows real exquisite, ... -definition video: * hd, 720P high-definition quality decoded,display high-definition images* support outer sound broadcast and various sound ... 15 minutes, 20 minutes, not automatic shutdownFont magnifier functionThe longest display time (h) : 28 hours audio, 6-7 hours Video,ebooks ...