The Eiki EK-55LU 3LCD Laser Projector offers an amazing viewing experience. It shines bright with 5,500 center lumens and 80% uniformity, along with an outstanding 5,000,000:1 contrast ratio. With native WUXGA resolution, it's compatible with inputs up to UXGA, WUXGA, and 4K. It supports analog and digital video input in all color standards up to 1080p, and 4K video input via HDMI. The ultra-short throw (0.238:1) manual focus lens is a great plus. It also has horizontal, vertical, and corner keystone correction, as well as pincushion/barrel and 6-point geometric correction. Key features include 5,500 lumens, WUXGA, 3LCD technology, a laser + phosphor light engine, acceptance of inputs up to 4K, and Crestron RoomView & AMX Device Discovery Technology.

Using the Eiki EK-55LU projector is easy. First, connect it to your device using the appropriate cable, like HDMI for 4K input. Make sure to place it in a suitable location considering the ultra-short throw feature. Use the manual focus lens to get a clear image. You can adjust the picture using the keystone and geometric correction features if needed. When it comes to maintenance, keep the projector in a clean and well - ventilated area. Avoid moving it while it's on. If there's dust on the lens, use a soft, dry cloth to clean it gently. Also, don't forget to check the manufacturer's website for software updates to keep your projector running smoothly.