... description and specifications1 , Products size: 180X180X180mm 2 , work power: 4Ω3W3 , Built-in lithium battery with 600 mAh , keep up to paly 6 ... hours , can repeat charge . 4 , SNR :85DB5 , Three Input mode : ... Bluetooth , AUX IN 3.5, USB , TF card interface6 , ...