The Acer X139 is a DLP office projector designed to deliver clear and bright visuals in professional environments. It features a native WXGA resolution of 1280 x 800 and supports compatibility up to WUXGA, ensuring that presentations and documents remain sharp. With a brightness of 5000 ANSI Lumens and 3D BrilliantColor technology, the image remains visible even in rooms with ambient light, while a 20,000:1 contrast ratio helps maintain detail in darker areas of the projection. This model is built for versatility, offering a projection size that can reach up to 7.62 meters diagonally from a distance of 1 to 10 meters. You can easily adjust the image using manual focus and a 1.1x optical zoom, while the vertical keystone correction of ±40° allows you to square the image if the projector is not perfectly centered. The device is housed in a black plastic casing, weighing 2.7 kg, which makes it manageable for moving between different meeting rooms. Connectivity is comprehensive, featuring two HDMI 1.4 ports, a VGA input, and a composite video input to accommodate various source devices. It also includes two USB 2.0 ports and an RS232 port for network control. For audio, a built-in 3W speaker provides basic sound for presentations. To ensure longevity, the 240W lamp lasts up to 5,000 hours in medium brightness or up to 10,000 hours in low brightness mode. Security is handled via a Kensington lock, a security bar, and PIN code locking.