The Optoma TX631-3D and TW631-3D bring the finest images to schools and businesses with high contrast ratio to ensure easy-to-read text and high brightness for excellent graphics even in rooms with ambient light. This DLP projector series integrates the features that businesses want (including a choice of WXGA or XGA resolutions, an HDMI connector and 3D compatibility) and supports larger audiences with a built-in 7-Watt speaker system. A top-loading lamp design streamlines maintenance and saves time. Meanwhile, a built-in closed captioning decoder displays text from videos that have closed captioning embedded in the signal without requiring additional components.