This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com ASUS Aura Sync RGB lighting features a nearly endless spectrum of colors with the ability to synchronize effects across an ever-expanding ecosystem of AURA Sync enabled products Swappable top covers enable four different ergonomic, ambidextrous height profiles Advanced optical sensor with 7200 DPI, 150 IPS, 30g acceleration and 1000Hz USB polling rate for fast and accurate tracking Built to last with durable 50-million-click Omron switches ERGONOMIC AMBIDEXTROUS GAMING MOUS