Microsoft Surface Pro 3 Type Cover - Blue (Certified Refurbished) 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 resulting product includes all relevant accessories, comes with a minimum 90-day warranty, and may arrive in a generic box. Only sellers who meet a high performance bar may offer Certified Refurbished products on Amazon.com Mechanical keys for rapid typing 5mm ultra-thin form factor Backlit, proximity-sensing keys Enhanced with magnetic stability to keep the keyboard steady