Product Highlight: - Easily pair with your smartphone tablet or other Bluetooth-enabled device. Enjoy great sound with enhanced bass. - Long play time straight on the rechargeable internal battery. Play share compete and enjoy all day long. - Make crystal clear with the handy speakerphone with built-in mic. It's great for phone calls or video chats -alone or with a group. Now great sound goes where you do share a playlist at a picnic. Watch a movie with your sweetheart under the stars. Gather around and wish a happy birthday to a faraway friend. Whatever you do with your smartphone or tablet wherever you do it do it out loud. What you need: - FOR AUDIO PLAYBACK: Smartphonestablets and other devices that support bluetooth wireless audio profile [ Advanced Audio Distribution Profile ( A2DP ) ]or 3.5mm audio output for smartphone and tablets. - FOR PHONE CALLS: Phones that support Bluetooth Hands-Free Profile ( HFP1.5 ) including iPhone ( all generations ). What you can do: - Volume control button: Click the button to next / previous song. Press the button for long to volume up / down. - TF card slot is for inserting TF card - USB port for charging - MODE button: Press the button for 3 seconds to search bluetooth devices. - Power indicator: Blue: working status (Aux bluetooth mode) Red: charging status - Comes with microphone. Hands-free speaker available only for the Bluetooth model.