In this video I’m testing UPERFECT’s new 16-inch 3K OLED portable monitor, the UColor O2 (I reviewed the non-touch version). I unbox everything you get—HDMI cable, two USB-C cables, VESA screws, and a USB-C power adapter—then I walk through the design and ports. Right away, my first impression was how thin and premium it feels, with a strong magnetic smart cover that doubles as a stand. You also get mini HDMI 2.0 plus two USB-C ports, physical menu buttons, built-in speakers, and VESA mounting holes if you want it on an arm or stand. I set it up as a space-saving second screen under my 32-inch 4K OLED, and it fits my desk perfectly without eating up real estate. Picture quality is excellent: vibrant, sharp, glossy OLED with great contrast, thin bezels, and a 16:10 aspect ratio that’s actually useful for productivity. For gaming, 3K looks surprisingly stunning, and the 1ms response time plus up to 120Hz makes it feel smooth—though I did find some refresh-rate limits depending on resolution over HDMI, and there’s no G-Sync/FreeSync. I also cover portability (it’s super light and backpack-friendly), speaker performance (fine on the go, but I’d use external audio at a desk), plus my pros/cons and the accessories I used to clean up the cable look. Overall, I’m impressed, and at around $349 (with a touchscreen option for $50 more), it’s a strong all-in-one option for desk setups, gaming, and work.