Bluetooth function?? connect Bluetooth earphone and speaker</br>Extroverted mp3?? can listen music without earphone</br>Built-in lithium battery 450mah?? Rechargeable Battery Get up to 10 hours of music playback?? recording up to 100 hours on a single charge with</br>Lossless acoustics; support multiple music formats: MP3?? WMA?? WMA?? APE?? FLAC?? WAV?? AAC-LC.</br>Please contact us freely with any problem</br></br>Product Description</br></br>Pretty MP3 player?? with aluminum alloy shell. Shakeproof ?? Dustproof?? many color ??10 HOURS Continuous Playback ??Bluetooth mp3 Connecting a Bluetooth headset support?? Bluetooth stereo Product dimension: 98x 40 x 7.8 mm?? N.W:35g?? G.W: 120g. Colored?? 1.8 inch TFT screen?? Resolution: 128*160px Product description: 1.With RKnano chip??perfect sound quality.It has various playing