This case will cost a bit more than the comparable TPU skins but it also looks a lot better!
The fit is perfect. It shall be clean at the grade 4 and all ports and the camera and the heart rate monitor are 100% cut precisely.
This also applies to the headphone output. However Spigen has probably kept the original headset that has a very narrow diameter.
For my headphones I had to extend something but simply going to fit now my headphones the opening with a knife.
The fingerprint scanner can be the case just as easy to operate as before.
Only the heart rate monitor is a bit tricky. But this is a little tip:
You just have to put on the recess exercise the fingers without much pressure. It is important not to exercise too much pressure and hold your finger beautifully into the corner where the scanner is (not simply centered on it)
Meanwhile, with a little practice it works almost always the 1st time. (Regardless of whether pulse or oxygen measurement)
The material is also top. It does not smell like plastic or rubber and it can be cool to the touch. The back is very slippery.
Of course, so does a case (and any other protective utensil) the score 4 slightly thicker. But who wants to have protected his device in a case that has to take into account.
Even the truly noble metal look of the note 4 disappears by such a case logically. But for me, have functional and security have a higher priority than appearance.
The color "black and blue" fits perfectly to grade 4 in black.
So overall 4 stars.
One star deduction, since the headphone cutout is designed very small.