More features:- MultifunctionalMore than listening to music, it can be used to record (WAV 1536kbps), listen to radio (record radio, listen via Bluetooth), read eBook(automatically flip), watch video(240*320AVI/AMV) and view pictures(slide show). Meet your daily needs of entertainment.- Long playing time As long as 50hrs (15-16 hours by Bluetooth) playback time after fully charged for 3hrs (screen off, at medium volume).- Resume Playback & BookmarksNot have to listen from the beginning of a song or playlist again and again. The player will remember where you left off last time! And it allows you to add/delete bookmarks for each audio file.- Background radio You can choose to continue listening to the radio when you exit the radio interface. Keep 30 stations as you like. (Need wired earphones as antenna)- Music playback settings Variable Speed Playback: adjust speed from -8(Slowest) to +8(Fastest). Set the playing speed as you need. 7 optional equalizers offer you more personalized experience.- Lyrics DisplaySimultaneous display lyrics if the music file includes lyric file. And you can choose to turn on/off lyrics display by long pressing the up button on music playing interface.- Time ScreensaverIt could acts as a clock during exercising or reading. Save power as well as protect the screen. - Certifications CE, FCC, RoHS certified. Lifelong free firmware update will be provided by AGPTEK.Item size: 3.48*1.54*0.33inHousing material: Aluminum alloyCharging Power: 5V /500mA (not use fast charge)Package List: 1 * AGPTEK C2S Bluetooth MP3 Player1 * USB Cable1 * User Manual Please note: No earphones in the package.