This Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty, and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer. An improved scissor mechanism beneath each key for Increased stability, as well as optimized key travel and a lower profile. It Pairs automatically with your Mac, so you can get to work right away.