Plantronics Voyager 8200-UC Stereo Bluetooth Headphones, for Smartphones, Tablets, PC/MAC Apps, Bluetooth Polycom VVX 601, OBi2182 | USB Audio Dongle, Charger | Bonus Power Supply

it's difficult to focus when there's background noise everywhere you go from the hum of an ac to the rumble of an airplane engine it's all very distracting to help block out ambient noise plantronics now features optimized active noise canceling technology known as anc to understand how it works imagine sound waves oscillating through the air the headset detects these waves then emits new inverted sound waves that cancel out distracting noise with disruptive low frequency noises removed anc makes phone calls and music sound clearer now you can focus on what matters most not on the noise around you