The ADD300/04 Headset is designed specifically to work with a range of Avaya 1600 series phones, as well as Cisco 7906, 7910, SNOM 720, 760, and 820 models. This versatile headset features high-quality audio with dual noise cancellation microphones, ensuring clear and uninterrupted communication. The comfortable ear cushion and adjustable headband provide a secure fit for extended wear. A digital display shows call status and message notifications, making this headset a reliable and efficient choice for any communication needs.