The Portal features smart video calling, Story Time, AR experiences and more. Portal's Smart Camera automatically adjusts to stay with the action, while the black 10" HD adaptive display matches the lighting and color of your room. The Portal comes with Alexa built-in. It makes video calls with Facebook Messenger and WhatsApp, and supports video calls with Zoom, Goto and Webex. Dimensions: 7.03" h x 10.23" w x 5.56" d (in landscape).