... devicesSleek ergonomical design, comfortable wearing, light weighted, Support multimedia video format like Mpeg, AVI, RM, RMVB, FLVQuality stereo headset ... 3.7V/500mAh, AC: 110-240VVideo Format: RM/RMVB/Mpeg/AVI/FLVMusic Format: MP3, WMA, Flac and APE; Music Feature: Diversified ... Txt Color, Txt Size,Browse Mode, Auto-paging, Reading stylePicture format: Jpeg, BMP, GIF, feature: Rotate, Zoom, Slides, ...