After working for a year and two months, the wheel started scrolling (when you move it in one way, the page, menu items, and files leap up and down). As it was utilized for a longer period of time, the condition grew even more severe. He tolerated it for three months before deciding he could no longer take it; after one and a half years, he took it back to the store, and they replaced it without any issues. Today marks the passage of another year and two months; in fact, the occurrence of this issue is what prompted the drafting of this evaluation in the first place. The retailer agreed to accept the item for examination through delivery (Hong Kong shop; I'm located in the regions), and they will ship a replacement. Yet, the desire to remain on this mouse no longer exists. There are already sufficient photos available in other reviews; adding more would not bring anything new to the table. Unless the wire became severely tangled as it came into touch with the side of the table, which seems rather unlikely.