The Optoma TX551, a 2800 lumen XGA projector with a robust 3500:1 contrast ratio, gives presenters the only tool they need to deliver detailed and effective presentations. Easily portable at less than five pounds, the TX551 goes wherever you need to take it. Educators and business users alike will appreciate the connectivity flexibility offered by the HDMI connector and 3Dcapability that supports delivery of emerging content offerings from a broad range of input sources.