Adjustable capacitive touch screen 7 "(1024x600). HD 720p Video 30. Run Android 5.1.1. Built-in Bluetooth 4.0+ for headphones and mobile device linking. Wi-Fi (802.11b / g / n) built-in. USB 2.0 port (2.0 compliant) for headphones, media and storage applications. Supports Opus Codec Up to 16 VoIP accounts. Video conference of up to 3 people Video and audio conferences of up to 5 people. Mountable on the wall. Supports color screen expansion module.