PRO 9450 Mono Wireless Headset and Base Unit Inuitive Touch Pad Controls on Base Unit US DECT 1.9Ghz 450 Wireless Range Noise Cancel MP Desk and Soft Phone connectivity. Microsoft OC Lync Cert

PRO 9470 Headset and 2.4-inch Touch Screen w Base Unit US DECT 1.9 Ghz 450 Foot Wireless Range Dual Microphone Noise Blackout Technology Desk Phone Mobile and amp Soft Phone Support. Microsoft OC Lync

PRO 9465 Duo Wireless Headset, 2.4” Touch Screen Display w/Base Unit, US DECT 1.9Ghz, 450 Ft Wireless Range, Extended Noise Canceling Microphone w/Extended Boom, Phone Support. Microsoft OC/Lync Cert

PRO 9460 Flex Boom Headset and 2.4” Touch Screen with Base Unit, US DECT 1.9Ghz, 450 Foot Wireless Range, Noise Canceling Microphone, Desk Phone and Soft Phone Support. Microsoft OC/Lync Certified.