I think it doesn't fit perfectly for the Poco M3. It's for the equivalent model Redmi Note, which is slightly smaller and has a difference in the buttons.

Amazing case pleasantly surprised me the fact that it has a small protrusion from the top side (screen side) so that even if you touch the screen downwards the mobile does not come into direct contact with the screen and protects it. I was so satisfied that I ordered two more as spare if needed. The only downside is the little ring that has the "hinge" from the bottom side as shown in the product photos which ultimately is not so convenient but it's ok, it's also a bit big but I can't say that it's negative given that it is rugged. Fortunately, the mobile has only fallen twice with this case and it seems to have protected it perfectly