The maximum resolution supports 4K 30hz The screen projector can also mirror the screen without WiFi. When the screen projector is not connected to the Internet, the mobile phone can also use Airplay and Miracast Can switch between horizontal and vertical screens Support DLNA screen projection, support TV screen projection 10 and above computers can also wirelessly project screens Resolution: 4K 30HZ Video output: -compatible Wireless frequency: 2.4G/5G RF output power: less than equal 19dBm Power input: 5V 1A Power supply interface: USB-C Compatible systems: ANDROID,IOS, OS, WINDONS10 and above Colour:Black Material:Plastic Package Contents: 1x Screen Projector 1x USB-C Cable 1x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.