The sonorix Bluetooth Handsfree Kit A1 is a state-of-the-art wireless speakerphone for handsfree operations at its best. It functions as "Wireless Handsfree Kit" or "Portable Speakerphone" when linked to Bluetooth phones supporting Headset or Handsfree profiles. Uniquely designed to be portable and versatile, A1 will provide you with maximum comfort and satisfaction for all of your handsfree needs whether you use the device in car, outdoor or in office.