[Android 11.0 OS] Android TV boxes use Android 11.0 operating system.android box 4gb ram can switch the background independently,you can switch to the style you want.Using the RK3318 quad-core cortex-A53 UHF CPU,There will be no lag and freezing during the operation,you can use all applications as you like.[4GB RAM and 64GB ROM] Smart TV box android 2021 provides excellent 4GB + 64GB memory. You can also expand the memory to 64GB with an additional TF card or a USB hard drive up to 2TB. The vast storage space allows you to download applications as you like, and the fast and stable system guarantees the safe storage of applications.[3D+4K ] Android box has 3D and 4K viewing functions, you can experience it without going out. AndroidTV box 4k is equipped with the latest H.265 video decoding technology, which is more powerful than H,264 and has no buffering, which can save you about 50% of broadband resources and bring you fun. The 4K1080P resolution allows you to see every detail without damaging your eyesight due to blurred image quality.[2.4G/5G WiFi and BT 4.0] Android tv boxes support 2.4G/5G dual WiFi.If you want to use a 5G network,you can fully meet your needs,the 4K Android TV box is pre-installed with programs,such as Google/Play store/Netflix/Youtube.And you can choose multiple APPs to watch videos and play games.Tv box android can also use an Ethernet connection,you can use it even if you don't have WiFi,Can ensure the efficient operation of the network.[Connect and use] Android Boxes 5Ghz has Bluetooth, USB and HDMI ports.It can be easily opened by connecting the power supply and HDMI cable. The Android 11.0 box TV has USB, you can plug the port into the keyboard and other control devices to realize remote control. If the box keeps restarting during use, you could change the power supply for testing, or please contact us in timeWe will provide unconditional technical support to let you better understand the situation when using the TV box.