Used about twice. Selling for less than the Amazon price. --The following is from Amazon-- Brand: AKIYO Recommended Uses: Gaming, Home Cinema Features: Built-in Cooling System Connectivity Technology: USB, HDMI Display Resolution: 1920 x 1080 Maximum Display Resolution: 720p HD Ready Pixels 【Small and Space-Saving】The size of this small projector (13.6*11*6cm) is about 1/3 of a typical projector. Its weight (420g) is about the same as a can of cola, so even children can easily hold it with one hand. This mini projector doesn't take up space and can be installed anywhere, such as in a bedroom or living room, allowing you to easily experience a home theater atmosphere at home. When moving, you can put the projector in your pocket or bag and carry it around. 【4K Compatible & 720P & 6500LM】The projector supports 4K and reproduces natural colors with a native resolution of 1280*720P and a high brightness of 6500 lumens, providing a superior visual experience. 【Zoom Function & Keystone Correction & Short Throw】This projector has ±20° keystone correction and a 75% zoom function. You can adjust the screen size to the optimal size without frequently moving the projector. The projector supports short-throw projection, with a minimum projection distance of 0.6 meters, allowing you to project a 36-inch screen. Even in a small room with limited space, you can enjoy a large-screen viewing experience. The projector supports front projection, rear projection, and ceiling-mounted projection modes. Using the included tripod, you can more easily adjust the projection angle. 【Built-in HiFi Speaker & Heat Dissipation System】The built-in two speakers meet the needs of daily use, not only for home theaters but also for parties and outdoor camping. The 3.5mm audio port supports external speakers to enhance the sound quality experience. The improved home projector adopts the latest high-efficiency heat dissipation technology in 2023, and the heat dissipation effect has been significantly improved. Noise is reduced by 50% compared to other products, with almost no impact on the viewing experience. (Note: Dolby Audio is not supported.) 3 Type...Portable