Specification: Item Type: MP3 Player Material: ABS Built in Polymer Lithium Battery: 180mAh (built in) Maximum Support: 64GB Support: Memory Card (not included) Package List:1 x MP3 Player About this item Support Up To 64GB Memory Card: MP3 player can be expanded to 64GB with a memory card slot built in. Compact And Portable: MP3 music player, compact and portable body, suitable for running, business, travel. Hifi Lossless Sound: Portable MP3 music player has lossless decoding sound quality, making music more beautiful. Enjoy Anytime Anywhere: MP3 player for running allows you to listen to novels, keep filming, and go wherever you hear. Long Time Playback: 64GB MP3 player lasts for a long time, listens to songs for a long time, and immerses you in the music world. Support Up To 64GB Memory Card: MP3 player can be expanded to 64GB with a memory card slot built in. Compact And Portable: MP3 music player, compact and portable body, suitable for running, business, travel. Hifi Lossless Sound: Portable MP3 music player has lossless decoding sound quality, making music more beautiful. Enjoy Anytime Anywhere: MP3 player for running allows you to listen to novels, keep filming, and go wherever you hear. Long Time Playback: 64GB MP3 player lasts for a long time, listens to songs for a long time, and immerses you in the music world.