This is an excellent unit. I have had many bluetooth headsets in the past, and have found this unit to be the best. I followed up by purchasing two other units, one was also direct from Amazon, and the other was from a third-party (BargainCell). The one from Amazon worked excellent and service was also excellent. The one from BargainCell was received with packaging opened and unit was defective. BargainCell refused to resolve, but Amazon quickly refunded all amounts after negotiation... THANK YOU AMAZON FOR SUCH GREAT SERVICE!