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 Ultra-quiet mouse with 90% reduced click sound and same click feel eliminates noise and distractions for you and others around you Mouse automatically connects to your computer via a tiny wireless Receiver that Plugs into your computer’s USB port Reliable, long range wireless mouse works up to 33 feet away from your computer (Actual wireless range may vary based on use, settings, and environmental conditions)  Two year battery life and auto sleep help you go longer between battery changes (battery life may vary based on user and computing conditions)