GRANDEY J6 Wireless Sportstyle Stereo bluetooth SPEAKER Sportstyle Built-in 4000mAh Battery Can give you mobile phone charging (BLUE) Wireless Bluetooth Speaker FM ,TF playing function Built in 4000mah super-big capacity backup batter,can charging your phone Built in microphone support hang up, redial calls Use touch buttons design, so you feel better 2*3w speaker andBass High quality tone quality