What the hell is HoloLens who announced that his mobile phone is dead?

HoloLens is an augmented reality headset running Windows 10 system. It has no restrictions-no cables and headphones, and no need to connect to a computer. Microsoft

HoloLens has the characteristics of holography, high-definition lens and stereo, allowing you to see and hear the holographic scene around you. Traditional human-computer interaction is mainly through keyboard and touch, including speech that cannot be accurately recognized. The appearance of Hololens points out the direction for a new generation to experience better human-computer interaction.