The Jabra PRO 9470 monaural wireless headset lets users answer calls from their mobile phones, desk phones, or softphones up to 450 feet away. Audio features like Noise Blackout - Jabra Noise Blackout technology eliminates disturbing background noise such as wind, surrounding conversations or traffic to enhance your voice. noise cancelling microphones that filter out ambient noise and Jabra Safe Tone acoustic protection make the PRO 9470 a versatile choice for the office professionals.