... devicesSleek ergonomical design, comfortable wearing, light weighted, Support multimedia video format like Mpeg, AVI, RM, RMVB, FLVQuality stereo ... headset enables user to enjoy hi-fi dynamic soundMemory Card Slot: Micro SD card slot, ... ; Music Feature: Diversified folders, playlists, editEbook feature: Bookmark, Page jump, Txt Color, Txt Size,Browse Mode, Auto-paging, ...