WiMiUS Q1 Smart Projector Accessories are complete and in good condition. There are some scratches from use. Display Resolution: 1920 x 1080, Maximum Resolution: 1080p Full HD/4K Equipped with a newly developed 4K image processing engine that allows you to enjoy 4K images with high definition, vivid colors, and high contrast, it can project high-definition images from Full HD video sources without missing any details. You can enjoy images that are clearly projected down to the details with the high color reproduction DLP projection technology and 500ANSI lumens of brightness. The WiMiUS Q1 projector not only connects to external speakers/earphones/headphones via Bluetooth 5.0, but can also be used as a Bluetooth speaker by connecting to a smartphone. [About 1-second high-speed auto-focus function & 4D keystone correction function] The "instant auto-focus function" of the WiMiUS Q1 projector, which uses the latest technology, is a very attractive feature. Especially home projectors are not always used in the same place. No matter when or where you use it, it adjusts to the best image quality in just about 1 second. Even when projecting from an angle, it automatically corrects the vertical distortion beautifully, so even those who are not familiar with mechanical operations can easily project beautifully without having to spend time on settings. Furthermore, the WiMiUS Q1 projector can correct not only the vertical direction, but also the horizontal distortion with the remote control, realizing natural projection even when the projector is placed off-center from the screen. [Android 7.1 installed & several operation methods] The WiMiUS Q1 mobile projector is equipped with Android TV function, so you can enjoy an overwhelming number of contents on a large screen with high image quality. It is an Android TV system that allows you to freely add your favorite apps such as videos, music, games, and shopping. There are also many apps that distribute high-quality images. Because it is a short-focus lens, it can project large images even at a short distance. It can also be connected to a Fire Stick, a computer, and games. Please note that exchanges and refunds are not possible to prevent substitution.