This product is and effective one in terms of its usage and the different functions, with different buttons for different functions included. Has been a very handy thing. One problemm i have been facing with this device i that it witches of automatically ans some time even is very very defficult to search, i.e. it odes not connect to the phone even it hows that the device has been detected by the mobile handset. Ha some software problems with my device, but do not know about the other customers using this.Overall rating of 3.5 for this product