I have used the BenQ EL2870U monitor for a few weeks, after having experienced larger BenQ EX3501R. The BenQ EL2870U is a very capable, feature packed 28 inches (16:9), 3840 x 2160 pixels monitor.
With 4K support and compatibility with HDR 10 content, the BenQ EL2870U can give you a complete experience, be it watching a movie or playing compatible game titles (such as World of Thanks, Uncharted 4 and Mass Effect: Andromeda between other titles that can take advantage of these features). The monitor has a 60 Hz refresh rate and 1 ms response time, which will give you a good video experience and a pretty good gaming monitor.
Out of the box you will need the help of a screwdriver to assemble the monitor but don't worry: you only really need it for one location as the screw is part of the base - no lose pieces around and really easy to put together.
The BenQ EL2870U has a basic mix of connectivity options with two HDMI 2.0 ports and a DisplayPort 1.4. Like the BenQ EX3501R, I have tested the BenQ EL2870U with a Windows 10 PC (using a NVIDIA 1050 Titanium card) via HDMI and with a Freeview SmartVu streaming dongle, also via HDMI.
Performance under those different sources was great and seamless. It worked out-of-the-box with Windows 10, but like other products you better have a optical drive so you can use the software driver that comes on a CDROM - the default Windows driver works fine but if you want to use the native drivers for colour management then you will need to get it out of the optical disc.
Thanks to its low blue light and an adaptative brightness feature called Brightness Intelligence Plus, the BenQ EL2870U is very comfortable for long periods of use. When enabled, a sensor detects ambient light levels and colour around you and automatically adjusts the monitor's brightness and colour temperature. You can change the sensitivity but I found that out of the box this feature saves me a lot of fiddling with the monitor, trying to adjust brightness on my own.
Another interesting feature is the Smart Focus, which highlights an area on the screen, dimming everything else so you can put your full attention to a specific task.
The BenQ EL2870U provides you with a headphone jack and two small built-in 2W speakers. The small speakers are good for basic sound but don't expect a theatrical experience from that - in which case you would be better served by a soundbar or Bluetooth headphones.
At 5.7kg the BenQ EL2870U is really light and fits on practically any desk - or can be used on the wall thanks to VESA wall mounts.