Featuresr you must connect your phone with bluetoothr can connect two phones simultaneouslyr voice promptr custom mobile charging cradlecarrying caser extended battery lifer supports bluetooth headset profile hands free profiledsp technologyr can be casual talk while drivingworking or walkingr support bluetooth stereo music playbackr applicable models compatible with all major brand bluetooth mobile phone as a hands free use with a bluetooth adapter can be usedfor online voice