It is similar to the Switch Dock. Anyconsole has features including "ESM (Electrical Spine Mirroring™) technology for a better gaming experience. The ESM technology makes lag time so low that it is imperceivable to the human eye. Bluetooth 4.0 wireless connection, HDMI video and a few USB ports for connecting keyboard, mouse, etc like USB-A x3, USB Type-C (power) according to AnyConsole Mini - Screen Mirror Mobile Games to TV
Looks pretty cool especially for people without a console. Not extremely useful for me though since there are almost no mobile games that I want to play
AnyConsole Mini could be good for people who want to play mobile re-makes of console games and console emulators on their smartphone, but want to use a controller setup instead of touchscreen controllers.
More console games maybe release for smartphones when smartphones become more powerful, and have 256GB or more GBs of storage, so this accessory maybe more useful in the future as more popular game series are released for mobile.