1. Small size, big vision. 2. Quiet design, efficient cooling system. 3. Built-in speakers. 4. Built-in lithium battery, no need worrying about the power. 5. With high precision lens, gives a better experience. 6. Energy saving, low cost of use and environment protection. 7. Support AV & USB & VGA & HDMI. 8. Portable and convenient to take. 9. 800x480 pixels resolution with brightness of 1800 lumens. 10. Picture size can up to 32-120 inch. 11. 1500:1 contrast ratio.