Wireless Mobile Projector - 100 Lumens Wireless connects to your device Project up to an 80" image Rechargeable 3800mAh battery Dual built-in speakers and focus control Mega-bright LED lamp projects up to 100 Lumens Wirelessly connects to your device (Note: Apple devices require use of free Brookstone App. Certain applications require a wired connection*.) Also connects via HDMI compatible cable to most smartphones, tablets, computers, video players, cameras and more* Mega-bright LED lamp projects up to 100 lumens; rechargeable battery life is up to 1.5 hours on a single charge (battery life will be reduced when using wireless mode) DLP IntelliBright technology dynamically adjusts projector brightness for each individual pixel based on image content and ambient light level TRP Sharp Pixel Technology uses diamond-shaped pixels for a sharper, smoother image Auto Keystone Correction automatically adjusts skewed images Rechargeable 3800mAh battery doubles as a USB backup battery for your smartphone Dual built-in speakers and focus control Native Resolution: 854 x 480 Includes AC adapter and 3&#039; HDMI compatible cable for wired connections