HP Elitebook 840 G1 (Certified Refurbished) Laptop Comes with Intel Dual-Core i5-4300U 4th Generation 1.9GHz (3MB Smart Cache, Turbo up to 2.9GHz) processor, Window 10 Professional Operating System, 8 GB DDR3L RAM Memory and upto 256 GB SSD Solid state drive internal storage. HP Elitebook also has DTS Sound,Integrated stereo speakers, HP True Vision web cam,Microphone, Full-size backlit keyboard with numeric keypad, The Laptop has 14 inch screen size, 13.3 x 9.4 x 0.8 inches (LxWxH) Physical Dimension and 3.5 pounds weight, HP Elitebook 840 G1 (Certified Refurbished) Laptop is Lithium-ion Battery Life.