Purchased in December 2021 and used for about 2 years. The mouse wheel chattering is quite severe, and scrolling up almost always scrolls down. The right, left, and wheel clicks, as well as the side buttons, function normally. Included items: ・Mouse body ・Instruction manual ・Replacement mouse feet ・Sticker Product description: ・Specially tuned ROG 16,000 dpi, 400 ips optical sensor, 1000Hz polling rate ・Ergonomic design optimized for FPS games, created based on feedback from esports professionals ・ROG exclusive push-fit switch socket to change click force and extend mouse life ・ROG micro switches for consistent click force and a lifespan of 70 million clicks ・Premium PBT polymer L/R buttons with a durable matte finish *Honeycomb internal structure achieves a lightweight design of 62 grams Connection type: Wired Other: Gaming mouse