1 bluetooth music player distance within 10 meters 2 hands bltetooth telephone with ... -in lithium battery with 600 mAh , keep up to paly 6 hours , can repeat charge . 4 , SNR :85DB5 , Three Input ... , AUX IN 3.5, USB , SD card interface6 , Bluetooth music player , support Communication distance within 10 meters 7 , can use as ... do not interference to other goods mini portable bluetooth music player