For its features, quality, and price (I paid €45), it is simply excellent (it also comes with a carrying case and batteries).
There is no design flaw regarding its screen, which is a colorful OLED display. However, what I understand (given that when you turn it on, the priority is DC) is that this particular device mainly targets the field of building installations and automotive space, where the volume of work and usage takes place indoors rather than outdoors. In well-lit indoor spaces, even in complete darkness, this specific screen is clear and transparent. You can easily have the device four meters away from you and still see the screen indicators clearly. However, in outdoor environments and under intense sunlight, this screen suffers, and the indicators can barely be distinguished when holding the device in your hand. So, if someone needs such a device mainly for outdoor work, then this is not what I would recommend.
Its measurements are accurate, but due to the large scale (1000V, 1000A) in very low voltage and current, it will show zero readings up to a certain point. For example, it starts giving a measurement value from 100mA and above, so it is not reliable for someone who relies on this device for measurements of such scale. But then again, who buys such a device for such measurements?

Its measurements are accurate. The problem it faces is that its screen is not clear in bright light.
I bought it for measurements in photovoltaics. With sunlight, you can hardly see anything.
Unfortunately, it has a wrong design while it appears to be a good instrument with many measurement options.