In addition to lifelike voice quality delivered by Yealink Optima HD technologies, the T46Gs large 4.3-inch color screen presents a modern Skype for Business interface, which gives users a familiar and friendly user experience. The T46G-Skype edition is equipped with advanced functions to help simplify every user\’s workflow. For executives and sales persons, the T46G supports USB Bluetooth connectivity and flexible call switching to mobile phones. For front desk personnel, the T46G can be paired with the Yealink EXP40 Expansion Module, which supports up to 240 additional contacts. *special order allow 3-4 business days.