The Yealink is an easy-to-use desk phone with a flexible, adjustable display. In collaboration with the Bluetooth USB Dongle BT40 and the Wi-Fi USB Dongle WF40/WF50, you are equipped for the future and can take advantage of the optional wireless communication capabilities. The USB 2.0 port allows for recordings or connecting a directly wired or wireless USB headset, as well as up to three Yealink EXP50 expansions. The Yealink SIP-T53 IP phone features an easily adjustable graphic LCD. Audio quality is optimized thanks to Yealink Optimal HD Voice technologies, including Yealink Acoustic Shield, which effectively eliminates disruptive background noise. The Yealink SIP-T53 IP phone not only offers Bluetooth connectivity, including Bluetooth headsets and synchronization of mobile contacts when using the Yealink Bluetooth USB Dongle BT40, but also Wi-Fi connectivity when using the Yealink Wi-Fi USB Dongles WF40/WF50.