Product details:

Switch Dock For Nintendo, TV Switch Docking Station Portable Switch Charging Dock For Nintendo Switch With 4K HDMI USB 3.0 Port And Cooling Fan 2021 Upgraded Version (Black)
For Nintendo switch dockswitch dockFor nintendo switch docking station,switch docking station
Feature:
[replacement for official Nintendo Switch Dock] This Nintendo Switch dock is only 78g(2.75 oz), which is much more portable and lightweight than official switch dock, ideal replacement for taking out anywhere. Same amount of ports for USB controllers and HDMI ports for TV.(AC Adapter and HDMI not included)
[COOLING FAN DESIGN]: A cooling fan is added to the original switch dock, which can effectively reduce the heating of game equipment and extend the service life of the machine.
[DOES NOT SCRATCH THE SCREEN]: The Switch Dock doesnt have something covering the screen to potentially damage the display. There's also no risk of scratching the screen when undocking or docking. The console sits on top of the unit instead of sliding into the Switch docking station, so ventilation holes won't be blocked, and avoid overheat. It allows you to play with Switch for an extended amount of time in your favorite games.
[4K HD SUPPORT, USB 3.0 PORT]: It has a USB-C port that is used to power and charge your system, an HDMI out port for video, and a USB 3.0 port and two USB 2.0 ports for connecting a controller or other
[PORTABLE & EASY TO USE]: Its very nice for travel. You are now able to use your switch when gaming in places that's not your home. This is small enough to fit in your travel case and take anywhere.Just hook up to the tv and power outlet then good to go. 1-Year Worry-Free Guarantee - If it breaks, return it and well replace it for free.

Description:
Product:N-Switch Screen Projection multifunction Charging Dock with Cooling Fan
Color:black
Weight:0.083kg
Size:85*67*57mm
Materials:ABS
Comoetabile: for Nintendo-Switch/ Switch Lite
Our switch docking station features
Cooling fan design can help extend the device life.
Over power protection will not damage the equipment.
Lightweight and portable,perfect for travel.
3 USB ports to meet your satisifaction.
It can be used while charging.
4K HD video
Packing list:
Switch Dock for Nintendo*1
Video Game Platform:Nintendo Switch
Brand:shiziwei
Video Game Accessory Type:Dock
Color:Black
Compatible Devices:Nintendo