Unused item. I am not a retailer, so I will answer questions about specifications, etc., to the best of my ability. *The contents have been checked and opened once. (There are signs of opening) --- * This is a small projector that supports high brightness of 550 ANSI lumens. It has real 1080P Full HD image quality and also supports 4K input. It can be used for various purposes such as movies, games, and presentations. * Supports 5G/2.4G dual Wi-Fi, allowing wireless projection of images from smartphones and tablets. It also supports wired connections (HDMI/USB) and can be connected to PCs, game consoles, DVD players, etc. * Equipped with 4P/4D digital keystone correction function, allowing free adjustment of vertical and horizontal distortion. Accurate image correction can be performed even with ceiling mounting or wall projection. * With a 50-100% zoom function, you can easily adjust the screen size to match the installation distance. The projection size supports 30-300 inches, making it ideal for both home and business use. * Built-in high-quality 3D HiFi speakers. With clear sound quality and rich bass, you can enjoy immersive sound without connecting external speakers. Wireless earphones and speakers can also be used via Bluetooth connection. * By connecting a Fire TV Stick or Chromecast, you can also watch video streaming services such as YouTube, Netflix, Hulu, and Prime Video. (*Some smartphone app playback is not supported due to copyright protection) * As a short-focus model, it is possible to project a 50-inch image from a distance of about 1.5m. You can enjoy large-screen images even in a small space. * Adopts a silent cooling system, allowing comfortable use even during long-term projection. The energy-saving LED light source has a long lifespan and is gentle on the eyes. * Comes with a convenient storage bag and cleaning kit. It is a compact size that can be used both indoors and outdoors, making it suitable for home theaters, camping, etc.