" 4K Screen & 4 1080P Backup Camera: With the 10.36 inch 4K ultra HD 4-split touch screen & 4 pcs of 1080P Full HD camera, you can get sharper, cleaner and more vivid view on road to get the ultimate travel pleasure. Built-in Bluetooth: With Bluetooth function, the VOONOA RV camera system enables you to connect your cellphone iPhone to the monitor to play music and answer calls. Free your hands, focus on driving, and reduce driving risks. Automatic Night Vision Function: Adopting the latest infrared LED lights & light sensor, the VOONOA backup cameras & side view cameras can provide you with at least 50 feet of night vision even in complete darkness. IP69 Waterproof: Using full-glue sealing technology for cameras & adding waterproof covers for all connections, the VOONOA truck system can work normally in various extreme bad weathers. Built-in DVR & Loop Recording: The DVR recording function enables you to record videos from 4 channels and can automatically save video in the event of an accident. Not support recording voice to protect privacy. Wide Adaptation: Simply connect a single power wire to the monitor, and then connect the 4 cameras directly to the monitor. This integrated design ensures a hassle-free installation process for the wired RV camera system, providing reliable surveillance. Using 12-36 volt DC power, the RV cameras system can be used for all vehicles like RV trucks trailers bus vans tractors the 5th wheel, etc. No Worry Service: VOONOA offers unlimited tech support and 2-year replacement service for the VOONOA 4K RV backup camera system. Check the manual book in the package to get more details."