BlueParrott B450-XT Brand New Includes One Year Warranty Item # 204010 The BlueParrott B450-XT Noise Canceling Mircophone Headset blocks out 96 percent of ambient sounds with advanced noise-canceling technology, and its HD voice feature makes speech easier to understand so you can focus on your conversation. This BlueParrott headset provides a 300-foot range for Class 1 Bluetooth reception. It offers large ear cushion, padded headband and deliver powerful sound and enables simple wireless pairing with your Bluetooth-enabled device. The B450-XT also has more advanced Parrott Button features, like voice control, for hands-free control of headset functions, and voice memo record. Noise Canceling Mircophone Headset Features Mircophone Headset Long Wireless Range 300 Ft. HD Voice Stay Connected With NFC, AD2P Support and Bluetooth Large Earcups Customizable Parrott Button Voice Memo Record Mic Style Flexible Boom Over-the-Head Wearing Style VoiceControl™ For Hands-Free Control of Headset Functions Micro-USB Charging Interface 24 Hr Battery Life 500 Hours 20 days of Standby Time 100 Hz to 10 kHz Microphone Frequency Response 20 Hz to 20 kHz Speaker Frequency Response Impedance 32 O ? 15% 1 kHz SPL 123 dB ? 3 dB at 1 mW