I purchased this product based on a CNET recommendation.  CNET has been a reliable source for most of my technology purchases.  This however, was a disappointment.  The unit does not eliminate sound effectively, volume controls are "mushy," the microphone/on off switch will not stay retracted, resulting in a constantly discharging battery.  It did pair easily, and the voice activated controls worked well.  I would not purchase another, and would advise others to avoid this model.