Processing very good, but because what is missing but ...

I had previously called an S-view Cover, and that was for the G3. This was however simply clipped into the cover and you're done. Astonished, I realized that this S-view Cover here actually the original back cover of Note 4 replaced. But ok, I have no problem with. The Grade 4 budge and the cover is also very well made. The viewing window is made of plastic and is not exposed as the G3. The S Pen but can also be used as normal on these windows.

The only thing I miss here is a cutout for the notification LED. In a short SMS while the window lights up, that was it but also already. In a Whatsapp message nothing happens.
So you have every now and then laterally push the button so that the display turns to see if something has changed.
In the context, I would have anyway desired a knock-on function for the grade 4. But that does not have the note 4 above, I can not exactly cover the chalk.
The phonetic / down buttons are not free, but can be pushed easily through the cover, corresponding markings on the cover are available.
What you should be concerned about, by the weight of the cover note 4 rises but noticeably, since I was a little surprised.

In and of itself, I am satisfied with the cover, the EIA I think but for completely coated. A price of less than 30 I think is reasonable.