Cisco IP Phones Compatible Call Center Headset with Noise Cancellation and Quick Disconnect Cords &#9989; The Cisco IP Phone Headset by Ovislink is the smartest choice for call centers, telemarketers, and customer representatives, featuring HD quality sound & voice, noise cancellation, tangle free headset cords, and a comfortable, durable adjustable head band &#9989; PROFESSIONAL QUALITY  The Cisco IP call center headset is engineered to sound great and last for years. Built in HD sound and voice quality with RF-Shield noise cancellation and Acoustic Shock Protection ensures you can hear and be heard crystal clear. &#9989; READY TO GO  The Ovislink Cisco Headset can be connected directly to Cisco IP phones without having to purchase an additional box. Includes RJ9 Quick Disconnect Cord and 2.5mm Quick Disconnect Cord. Metal microphone boom is rotatable, flexible, and long lasting, user may place the speaker on left or right ear anytime. &#9989; Compatible with Cisco VoIP phone models: 6921, 6941, 6945, 6961, 7821, 7841, 7861 7931G, 7942G, 7945G, 7962G, 7965G, 7975G 8811, 8841, 8851, 8861 8941, 8945, 8961 9951, 9971, SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G2, SPA303 &#9989; 2 YEAR WARRANTY AND 30 DAY GUARANTEE  We stand behind the quality of every one of our products which is why were happy to offer you a 2 year warranty and 30 day guarantee on your Ovislink Monaural Cisco IP headset.