I almost thought I bought a box. The screen was very, very dark. But SURPRISE! Always read the instruction manual. When your computer is running on battery power and you power the monitor from the computer via USB, it remains in a low-power, dimmed mode. Once I connected my computer, I was able to increase the brightness. And it's a very, very nice, bright picture when the brightness is turned up. Very light and easily fits in a laptop bag with no added weight. I only rated "Brightness" with 4 stars because of the forced dimming mode in battery operation.
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