4-in-1 HD phone screen magnifier with 12-inch HD 3D display, Bluetooth speaker, mini emergency power bank, and adjustable phone stand. The magnifier enlarges the phone screen for easier viewing, and the built-in Bluetooth speaker provides wireless audio for videos and calls. The mini emergency power bank offers extra charging, while the adjustable stand keeps the phone at a stable viewing angle. Portable and foldable design. Lightweight and foldable, it folds to a slim profile for easy carrying. Suitable for indoor use, camping, travel, and leisure. Easy to use and charge. Uses a USB port for charging and power supply, making it convenient for indoor, camping, tourism, and leisure use. Bluetooth speaker performance. Wireless Bluetooth portable speaker with a diaphragm for louder sound. Use scenarios - At home or at a desk: watch videos on your phone with a larger view and enhanced audio. - On camping trips or during travel: enjoy media, listen to audio, and use the power bank for emergency charging. - On the go during commutes or leisure time: quick access to bigger screen viewing and better sound for entertainment.