The Lenovo ThinkVision Pro2840mD is a 28-inch, 4K monitor with a resolution of 3840 x 2160 pixels.

It has a high contrast ratio and a wide viewing angle.

The monitor has a brightness of 270 cd/m2 and a refresh rate of 24 Hz - 70 Hz.

It also has a speaker and an HDMI stand.

Here are some insights from reviews:

Pros

Sharp picture with accurate colors

Easy to unpack

Vibrant images