AGPtek Hands-free Noise Cancelling Corded Binaural Headset Headphone with Mic Mircrophone for Call Center Phone Desk Telephone - Cord with Dual 3.5mm Audio Plug Application: for Phone sales, Telephone Counseling Services, Insurance, Hospitals, Banks, Telecom operators, Enterprises...Compatible for the most telephones in call center. Noise proof microphone, to increase the voice clarity. Just plug directly into your headset-ready telephone! 150 ohms speaker, to ensure the perfect voice quality. What you get: 1 Year Manufacturer Warranty; 1* Cord with Dual 3.5mm Audio Plug Binaural Headset