Hp 15 notebook Write your paper or update your blog while listening to your favourite songs.designed with a smaller hinge r HP laptop shouldn’t be. We designed a hinge that moves as fluidly the thousandth time you open it as it does the first time. The stainless steel hinge is tested with up to 25, 000 openings and closings and 7, 000 360-degree rotations. Sealing the mechanism in metal keeps dirt and dust out, so the enclosed gear hinge isn’t vulnerable to damage from the elements.Keep going even in dimly lit rooms or aboard red-eye flights. With an optional illuminated keyboard, you can type comfortably in more environments.dual HP Speakers and audio custom-tuned in collaboration with the experts at B&O PLAY deliver rich, authentic audio. Let the sound move you.with the best perfomance ever you had.