-Super Battery Life- Charge Once a Month: With 1500mAh battery, continuously music playing time could be up to 90 hours. If 3 music hours per day, means one fully charge can be used for one month, which is much longer battery life than other music players -MP3 Player with Bluetooth 5.0: Advanced Bluetooth 5.0, can provide you better compatibility and stable connectivity, easily connect to bluetooth headphone, speaker, car audio with fast and stable transmission without tangling -Loud Speaker & Stereo Sound: Our Z6 mp3 player build-in speaker offer loud volume stereo sound, super HD sound allows you to enjoy the music feast. It supports most audio formats such as APE, FLAC, MP3, OGG, AAC, ACELP, WMA, WAV, support video format such as AMV, AVI, you can make bookmark in an audio-book,. It also supports FM radio recording -96GB Memory & Expandable: The internal storage of this portable mp3 player is 32GB and it comes with a 64GB sd card, totally 96GB; in addition,