Same screen function For OS X phones and Android phones, tablets can be connected using the device's charging cable, no separate phone adapter cable needed. Mobile power supply The projector supports a mobile power supply, so you can watch movies anywhere, anytime. Built in speaker Pocket cinema projector has built in 4 ohm 2 watt speakers for clear sound; external headphones and external speakers are supported. Eyes protection The projector uses diffuse reflection imaging technology to guard children's eyes. Use scenarios Home entertainment Connect a compatible phone or tablet via the charging cable to display on a wall or screen without extra adapters. Ideal for family movie nights or casual viewing in a living room or bedroom. Portable movie time With a mobile power supply, take the projector outdoors or to places without a fixed power source to enjoy movies on a wall, sheet, or screen any time. Private listening and presentations Use external headphones for private viewing or connect to an external speaker for better sound in a quiet environment or classroom presentations.