LG PH510PG LED Projector with Built-In Battery HD RGB LED 550 Lumens 100000:1. Triple Wireless Perfection, No messy cables anymore. Just wireless phone mirroring, Bluetooth sound, and portable battery. Wirelessly stream sound directly from projector to Bluetooth compatible sound system such as home audio, headphone and portable speaker for a seamless listening experience. Unlike conventional projectors, LG's Screen share provides wire-free experiences when connect with PC, smartphones, or tablets. Built in Battery up to 2.5 hours. CineBeam gives you a cinematic viewing experience up-to an extra-large 100-inch class size, so everyone in the room can enjoy the home theatre experience. Light Weight and Slim Design. Easy wired mirroring with smart devices of iOS/Android. **compatible with slimport / MHL / AV adaptor. Just plug and play USB to watch movies, picture, music and office files like Presentation, Excel, and Word. The projector's pure LED lamp displays natural and rich colours and will last up to an estimated 30,000 hours. It means that the lamp does not have to be replaced for 10 years even if the projector is used 8 hours every day.