This projector uses solid-state LED lamps, which are warrantied to 20,000 hours of use. That’s about two years and three months without switching it off. Or, more realistically, 18 years with three hours of use every single day.
The image is provided by a 1920 × 1080-pixel 0.65-inch Digital Micromirror Device with 4× pixel-shifting technology, designed to deliver a native Ultra-HD (consumer 4K) image. The BenQ rates the brightness at 3200 ANSI lumens, and the contrast ratio at up to 2 million to 1.
The unit supports modern high-end picture quality standards: HDR10, HLG and HDR10+ and both Rec.709 and DCI-P3 colour. Indeed, for both of those colour standards the projector offers 100% support, not some mere subset of the colour range. Every projector is individually calibrated for colour accuracy at the factory and provided with a calibration report.
There are two HDMI inputs, both supporting 4K and HDCP 2.2. One of them also supports the HDMI audio return channel (and eARC as well). Why would that be, given that ARC is only useful where the display device is an audio source? Well, the W4000i comes bundled with a BenQ QS02 Android TV dongle. Although “dongle” is perhaps misleading, because it doesn’t poke out precariously from one of the HDMI inputs at the back. Instead there’s a neat rectangular housing for the QS02 on the back of the projector, with its own power and HDMI connector built in. The thing is about as well integrated into the projector as anything can be, short of factory installation.
Two remote controls are provided: one for the Android TV device, and one for both the QS02 and the projector itself.
Other connections are a USB-A slot for media playback, another to supply power to anything else you might want to plug in, stereo analogue and optical digital audio outputs, and RS232C, Ethernet and a 12V trigger output for system integration.