What are the highlights of the Amazon robot Astro?

Astro, an Amazon robot, is a household robot driven by Alexa. It can automatically patrol your home, send a notice if any abnormality is found, or remotely control it, and it is equipped with a periscope camera so that it can be seen from a height. In addition, Astro is equipped with a rotatable screen and a touch screen, which can control the direction and speed of Astro.