It's bright, so it seems like it can project over 300 inches. It's like a small movie theater. I bought it to do a giant Christmas projection on my grandson's house's exterior wall. I managed to do it, but the house's exterior wall had an uneven structure, so it didn't look good, so I gave up. I haven't used it since, so it's clean. There was an introduction review: https://win-tab.net/acc/apeman_lc650_review_2012182/ -------------------------------------------------- Projection method: LCD Light source: LED Physical resolution: 1,920 x 1,080 Input resolution: 4K Brightness: 6,600 lumens Contrast ratio: 5,000:1 Input/Output: HDMI, AV composite (compatible with 3.5mm 3-axis terminal), USB x 2, audio output terminal (stereo mini-plug) Size: 265 x 220 x 87mm Weight: 2,925g Other: 4-axis keystone correction support (±25 degrees) with digital correction Type...Portable