Our Blue Tooth Speaker for Tablets and Smart Phones includes a built in microphone so you can answer calls hands-free from the speaker with the touch of a single button. Perfect for conference calls, the speaker will stop playing your music when the call comes in and allows you to answer the call remotely. This blue tooth speaker comes complete with an auxiliary jack that allows you to enjoy the speaker with legacy devices such as MP3 Players and computers that do not have wireless connectivity. This innovative design utilizes an 800mAh Lithium Polymer Batter which provides up to 10 hours of play time. This high quality battery has zero memory allowing you the charge the battery without having to drain the remaining power for improved battery longevity. Our Speaker has automatic wireless synchronization via blue tooth. Simply power the speaker to the on position, enable Bluetooth wireless on your tablet, Smartphone or computer, select the speaker and you are connected.