After being put to use for a period of four years, the wheel eventually reversed and broke. The issue was remedied by disassembling everything and giving it a thorough cleaning. In addition, the braid was torn closer to the connection point of the mouse itself (the use of black electrical tape is helpful in this regard, but it may have been soldered). keep using and enjoy! Has some pros: The X7 is stunning and dependable, and it has a key arrangement that is comfy and has high-quality assembly overall. Laser. Its cons: Wire that is prone to breaking at the point of connection with the mouse (replaced with rubber braid)