This product is sourced through authorized mobile phone manufacturer accessory channels and is 100% genuine original. Transparent cover window displays critical information when the cover is closed. Answer or reject calls without opening the folio cover. Compatible with: Galaxy S21 Ultra 5G Available colors: Black, Gray Keeps your phone clean and protected. Infused with an antimicrobial coating, the Smart Clear View Cover helps block microbial growth to protect against certain bacteria, so you can focus on what matters. Use your phone with the screen hidden. Stay updated on alerts and notifications without opening the cover. Icons display messages, battery level, time, and more. Easy control with a simple tap. Stay informed about alerts and notifications without opening the cover. Icons show key information such as messages, battery life, time, and more. Sleek, modern design. A clear side window allows a glimpse of your phone and adds a refined touch to the case’s appearance. Full protection front and back. The flip cover and back case work together to surround and safeguard your phone. It fits snugly to protect exterior components like the camera and buttons. Precision performance. The S Pen offers 4096-level pressure sensitivity and a 0.7 mm nib for a smooth, accurate writing experience. With your Galaxy S21 Ultra 5G, simply place the pen on the screen and press the S Pen button to activate floating window commands for writing or editing. Note: Before updating your phone's software, remove the phone cover. After the update is complete, reinstall the cover. Updating the system while the cover is attached may cause compatibility issues, rendering the cover non-functional. When the phone's NFC function is enabled, the protective cover supports smart mirror functionality and automatic wake/sleep screen activation. Avoid placing the phone near metal objects to ensure proper function. Note: Always remove the phone cover before updating your phone's system software to maintain compatibility. Thank you for your understanding and patience.