The well-known Red Magic cooler needs no introduction. It cools the phone and has an app to control the color, cooling, and everything else. Used only once, comes with all its accessories. Purchase price: 240 Selling price: 190 for serious buyers only. Maik Fi Fine is like new, no static or anything else. The mic is well-known and its price is known. One of the knobs is missing, but it doesn't affect functionality. You can remove the top one and adjust it downwards normally. Selling price: 100 only for serious buyers.