It was also quite watchable in a dark room at 120-inch size, although contrast and color saturation were both enough better at 100 inches that I preferred staying with the smaller size. I found it easily bright enough for an 80-inch 1.0-gain screen in a family room at night with lights on and usable, if a little dim, at the 80-inch size in the same room on a heavily overcast day with light streaming through the windows. As with many LED projectors, however, its perceived brightness is higher than you would expect from the measurement. Based strictly on our brightness measurements, the M631's brightest mode would be suitable for a 90-inch diagonal, 16:9, 1.0 gain screen in a dark room or a 55-inch screen in a family room at night with the lights on. There is a screw receptacle on the bottom for a tripod mount. When sitting on a table, the bottom of the image is at the same height as centerline of the lens. The M631 is designed for either a tabletop or a ceiling mount. Fan noise is high enough in both volume and pitch that it may be a problem for those who are particularly sensitive to noise.UHD support is limited to input with a maximum 30 Hz and maximum 8-bit color, and it lacks the HDCP 2.2 copyright management required for UHD Blu-ray and major U.S.
The M631 showed an exceedingly slight green shift, although not enough to notice without a reference image to compare to.Two on-board 3-watt speakers 3.5mm analog audio-out jack.USB-C port for video input and both power in and out: when operating on AC, it can charge a cell phone while doing a presentation you can also use it with a MacBook Pro charger to charge the projector's battery.Built-in lithium-ion rechargeable battery rated at two-hour life when fully charged.Both remote and case have buttons for all controls: focus, power level, volume, source, and inverting the image for a ceiling mount.Accepts a 4K UHD (3840 x 2160) signal, downsampling it to the projector's native 1080p (4K UHD support limited by copyright management and to both 30 Hz maximum and 8-bit color).1080p native resolution using DLP chip with square, rather than diamond-shaped, pixels.Measured at 298 ANSI lumens in its brightest mode.Rated as the LED equivalent to 700 ANSI lumens for lamp-based projectors, which matches our subjective observation.In that context, it succeeds notably well. It also falls solidly in the lifestyle projector category, which means it's all about ease of use and is aimed at consumers and road warriors who care more about convenience than the usual enthusiast concerns like precise color accuracy, contrast, and black levels. No matter the driving force behind the design, the M631 is a highly portable, native-1080p projector with two HDMI ports and a USB C port, which means you can connect it to just about anything-as well as use it for anything from watching movies, to showing off photos, to giving presentations.Īs is typical for projectors in its 2-pound weight class, the M631 is built around a DLP chip and LED light source. That explains why Apple sells it on its website as an iPhone accessory, but it doesn't mean you should ignore it just because you're solidly in the Android or Windows camp. Miroir's website touts the $649.95 Miroir M631 Ultra Pro projector as being designed for iPhone, iPad, MacBook, and Apple TV. The Miroir M631 delivers handsomely on its promise to deliver a decent-quality, 1080p image in a highly portable package, but its defining strength is that it's supremely easy to use.
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