Bluesonic HCB35 Bluetooth Handsfree Headset with Boom Mic and Noise Cancelling (with car charger) Adjustable volume control by touching a single button Supports internet phone call ; voice dialing, three-way calling and call waiting by touching a single button (contact your cell phone provider for more information) Noise cancelling feature cuts down on background noise, allows you to hear and be heard clearly Compatible with most Bluetooth-capable cell phones Only with AC wall charger; item can be shipped only within the U.S.