I GIVE THIS PRODUCT A VERY HIGH RATING. I WORK IN A AUTOMOBILE PLANT AROUND ALOT OF STEEL.THIS A120S PERFORMED OUTSTANDINGLY. IT IMPROVE MY RECEPTION WHEN RECEIVING CALLS. THE STEEREO WAS VERY CLEAR.IT EASY TO PAIR WITH MOTOROLA S805 HEADPHONES. AND BLACKBERRY PEARL 8100 CELL PHONE/PDA.