BLOCKS OUT 96% OF BACKGROUND SOUNDS - The BlueParrott B450-XT Headset features a noise-canceling boom mic that picks up your voice clearly and rejects ambient noise. You can comfortably talk even when your car engine is running noisily. | OFFERS LONG WIRELESS RANGE - You can walk and talk with B450-XT even if you're 300-FT away from the paired phone thanks to its Bluetooth 4.0 Class 1 technology. NOTE: If your paired device uses Bluetooth Class 2, the wireless range will drop to 30-FT or lower. | LISTEN TO MUSIC WIRELESS - This headset supports Bluetooth A2DP so you can stream multimedia files like music, GPS directions, and more. | PROVIDES EXTENDED COMFORT AND CONVENIENCE - The enhanced headband and cushioned earpads allow you to wear B450-XT for long-haul drives. With the VoiceControl function, you can answer/reject calls hands-free. You can focus more on the task at hand rather than on your phone.