Lenovo T510 Laptop Core-i5-2.53GHz, 4GB Memory, 250GB Hard Drive, DVDRW, Webcam, 15.5in. with Windows 7 Professional 64 bit. 1 year warranty (Certified Refurbished) Certified Refurbished product has been tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with relevant accessories, a 90-day warranty, and may arrive in a generic white or brown box. Accessories may be generic and not directly from the manufacturer.