Tronfy Portable Mini Pocket Multimedia Pico DLP Projector With WIFI Wireless Android 4.4.2 For Android Samsung iPhone iPad in Business Education Entertainment Mobile HomeTheater Cinema With Tripod Smart Mini Projector, Built-in Android4.2.2Intelligent System.It Supports a Variety of Interactive Mode with the screen. You can play videos on internet anytime and anywhere. Built-in Speaker,Built-in Bluetooth / WIFI(802.11b/g/n),Built-in 4G (support 32Gexternal and mobile hard disk).Suppport external audio,support mouse. 2500 mA high polymer lithium battery, it can work About 120 minutes. Tronfy E06SPre-installed the Really FULLY LOADED KODI (14.2), YouTubeFacebookNBA and hundreds of add-ons was already installed. Summer Holiday is coming!Used for outdoor movie is prefect. Moved back so screen would be really big and picture was still focused and even clear enough to read words. If you're using outside, I would suggest speakers but sound is pretty good.