Thank you for viewing. It requires a power source, but I took it camping and used it by projecting onto the tent. Number of uses: about 5 times Purchased in 2020 Features: Built-in speaker, SD card slot HDMI connection available, headphone jack available Accessories: Remote control, power adapter, AV cable *Everything in the photos is included. *The picture and sound quality are as expected for the price. It's best viewed at night or in a dark room. *I connected my iPad, but a separate cable is required for that. *Operation has been confirmed. *There is some dirt near the tripod mount on the bottom. Please search for "artlii mini projector" to find videos and more details. Please consider this item, understanding that it is a used product.