Yealink T57W is a premium IP phone with a 7″ touchscreen display, HD audio, and wireless connectivity. T57W supports 802.11ac Wi-Fi, letting you position the phone anywhere in the office while still having an excellent network connection. T57W also gives you native Bluetooth support for wireless headphones. The large capacitive touch display makes it as simple to operate as a smartphone. Yealink Optima HD gives you rich, wideband audio quality from the hearing aid compatible handset and full-duplex speakerphone. Yealink Acoustic Shield technology sets a virtual perimeter around a speaker or speakers and blocks out sound beyond that perimeter, giving you excelletn background noise reduction.