BT's Paragon 650 with 32 minute digital answering machine is the flagship Paragon product. It not only boasts the best features of the 510 and 550: 200 name and number directory protected by a non volatile memory, 4 line backlit inverse LCD display, selective group ringtones, SIM reader/writer, type 2 caller display, headset port and SMS text messaging.Sennheiser CC 520 Binaural Headset Personal standards at work demand professional means of communications. This binaural headset is specifically designed for Call Center use. Features such as Ultra Noise Canceling reduce ambient sound and make conversation clear and intelligible. Active anti-shock in ear pieces safeguards against acoustic shock and hearing impairment with prolonged use. Adjustable and pivotable microphone boom aids comfort and speech intelligibility. Small and light for absolute wearing comfort.