Certified Android OS: S4 Stanbyme use Android OS which has Google certification, allowing to download and install any application from Google Play Store. With 8GB RAM and 128GB storage, you can easily run all your favorite apps.What can be used for? The Portable TV on wheels have 32" large touch screen, and 133WH big built-in battery. You can use it at any time, any where such as watching videos for stretches, working out, recipe videos on the kitchen, watch an episode in bathroom, tiktok while youre lounging, linking to your karaoke, playing games and go camping, video call or take photoes with the 4K camera.The screen angle adjusatable: The screen can be adjusted by moving it up and down, rotating left and right, and tilting at different angles to provide a better viewing experience. This allows you to comfortably watch videos anywhere, whether you are sitting or lying down.Other functions: The smart screen offers both wireless and wired screen casting options to share the contents from cellphone, tablet, or computer. You can draw pictures or write something on the big screen with the whiteboard. The device can be used as a computer after connected Keyboard and mouse. The apps can be put into folders, and the screen wallpaper can be customized. 4K HD Camera Built-in Battery(133WH)Android 12 OS, Install Apps at willSmartphone,Tablet,Computer Screen CastingCustomizing The Screen WallpaperPutting Apps Into FoldersMove Easily,Even on The CarpetScreen Angle AdjustableWatching Tiktok By Remote Controller4K HD CameraBuilt-in Battery(133WH)Android 12 OS, Install Apps at willSmartphone,Tablet,Computer Screen CastingCustomizing The Screen WallpaperPutting Apps Into FoldersMove Easily, Even on The CarpetScreen Angle AdjustableWatching Tiktok By Remote Controller