Optoma 4K400STx is a powerful short-throw projector that delivers stunning true 4K UHD resolution and HDR compatibility. With 4,000 lumens of brightness and a 1,000,000:1 contrast ratio, it produces sharp and vibrant images even in brightly lit environments. The 0.5:1 throw ratio allows for a large 100-inch image from just a few feet away, making it ideal for smaller spaces like classrooms or meeting rooms. Its extensive connectivity options, including dual HDMI ports, audio connections, and a USB power port, ensure compatibility with a variety of devices.