[Multi-functional Player] It is not only a MP3, MP4 player, but a FM radio, voice recorder, E-book reader, picture viewer. Also, it has the function of pedometer, stopwatch, alarm clock and calendar. Plus, you can use BT function to connect it to your BT speaker or BT earphone, the audio will play via BT devices. It supports 26 languages, you will find one that fits you. [Support Various Media Format] It supports music format including WMA, MP3, APE, FLAC, WAV, DRM and ACELP; video format including AMV and AVI; voice record format including WAV and MP3. Also support several picture format and E-book format. [Strong Memory Capacity] Built-in 8GB memories, up to 2000 music can be stored, support up to 64 GB expandable TF card. You can save files you like on D11 as a U-disk. [Long Battery Life] Built-in 420mAh large capacity battery, it supports up to 36 hours music play time and 8 hours video play time through earphone. Just charge for two hours and you can immerse yourself in the world of entertainment. [Delicate & Textured Design] Made of high-end zinc alloy and plastic, give you textured feeling, the zinc alloy shell is durable and stable, and matte textured button is non slip and wear resistant.