Bluetooth Speaker, Hopestar Wireless Car Radio Speakers Bluetooth + TF Card Slot + FM Radio + MIC + USB, support A2DP, AVRCP, handsfree profile, can almost meet your all the need of a wireless protable speaker. Support mp3/mp4 music palys, Tablet PC, mobile phone, etc, any mobile device comes with Bluetooth function. Keys operation: 1)Mode key(switch to bluetooth/USB/TF card/FM radio) 2).Last song/turn down volume when press long 3).Next song/turn up volume when press long 4).Make a call in phone, the pause/play press twice to switch the call to speaker. Press once to answer a call. Press long to cancel pairing under Bluetooth mode. Press short to search station under FM radio mode. Built-in high capacity rechargeable battery, support long play, 100% Brand New, use the wireless bluetooth technology. what you get: 1 x bluetooth speaker,1 x usb cable, 1 x user manual. 40 days money back guarantee and helpful customer services!