Divoom DV-SOLO-3-SLATE Bluetune Solo Wireless Bluetooth Speaker (Slate) Small and convenient size gives you ultimate portability without the wires Comes with an single cable for battery charging and auxiliary input Latest Bluetooth 4.0 technology for high-quality streaming Built-in microphone allows you to make hands-free phone calls Built in chargeable Lithium-Ion battery, giving up to 8 hours of constant playback