If 27-inch 5K displays arent your thing, BenQs 32-inch 4K monitor is a fun option Ive been testing and loving. The BenQ RD320UA 32-inch Ergo Arm Programming Monitor with MoonHalo is designed to maximize comfort during long coding (or writing) sessions. How Im using BenQ RD320UAAs a 4K display, the RD320UA is ultra sharp when using 19201080 screen real estate. However, Ive been using the scaled resolution option of 25601440 without straining my eyes. This works well when using the 32-inch 4K monitor next to the 27-inch 5K monitor without noticeable resizing weirdness.Speaking of eye strain, the RD320UA minimizes discomfort in three ways.MoonHaloThe MoonHalo light source, like a customizable backlight behind the display, illuminates the area behind it, reducing eye strain from the monitors light.This is great for late-night keyboard sessions. It beats working in a dark room or staying up late in a bright room when youre coding or writing.The MoonHalo is easily toggled on/off, with seven color temperatures ranging from daylight to warmer tones, and adjustable brightness. Customizing MoonHalo to different modes allows for a cool backlight in Light Mode, a warm backlight in Dark Mode, and no backlight in M-book mode.When the display turns off, so does the MoonHalo light. During testing, using Apple Vision Pro with my Mac mini at night turned off my actual display, including the MoonHalo light. Removing Apple Vision Pro woke up the display, and the MoonHalo lit up the room again. It was a delightful experience!Ergo ArmThe Ergo Arm is delightful to use. The monitor floats above your desk, and you can easily raise and lower it with a light touch. The arm has two pieces that allow you to position the monitor precisely. You can also rotate the display from landscape to portrait orientation quickly.Night Hours ProtectionRD320UA features Night Hours Protection, which dynamically adjusts the displays luminosity for late-night work. It uses minimum brightness technology, low-light eye-care filter, and dark-room display optimization, BenQ explains.With advanced low brightness technology capable of descending far below conventional limitations, Night Hours Protection allows programmers to find their optimal brightness setting even in the darkest of rooms, alleviating strain on the eyes and facilitating the elusive flow state while your eyes remain fresh during coding sessions well into the night.Importantly, switching modes and adjusting display preferences are easily accessible through the displays built-in menu no need to dig through complicated settings.BenQs Nano Matte Panel wraps up my affinity for the RD320UA, making it great to use in direct lighting during the day while reducing glare at dark environments.For more specs around the monitor:32-inch, 16:9, 384021602000:1 contrast ratio90W USB-C KVM switching built-inDualView Plus and picture-in-picture/picture-by-picture support Finally, I just have to mention that the RD320UA is also a wonderful monitor for simply watching videos and movies or playing a lo-fi video games on YouTube as a seven-year-old.The new BenQ RD320UA is available from benq.com and Amazon for $699.99. Find compatible BenQ software here, including Display Pilot 2.Best Mac mini accessoriesAdd 9to5Mac to your Google News feed. FTC: We use income earning auto affiliate links. More.Youre reading 9to5Mac experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Dont know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel