Hp 15 ease to use .I AM USING HP 15 .THIS QUALITY IS BETTR .HP 15 RUNNING FAST AND WORKING EASY.IT IS GOOD AND DURABILITY IS GOOD .HP 15 VALUE IS GOOD .I PAY TO EASY .ITS SERVICE AND SUPPORT IS GOOD. I WACHE THE MOVIE .THIS SOUND IS VERY GOOD.AND MOVIE QUALITY IS GOOD.I USE DESINING APPS IT IS WORKING FAST AND DESIN TO ESEY TO ANY DESINE WORK .HP LAPTOP BATTRY BACUP 6TO 8 HOUR I AM WORK TO 7 HOUR .ITS WEIGH IS SO LIGHT .he HP Notebook 15-ac121nr is made of plastic, but it’s still an attractive device. The laptop’s lid features HP’s logo in black on a silver, diamond-textured pattern that strikes a handsome modern profile. Opening the lid reveals a silver deck with a subtle crosshatch design(it comes in other colors, including red, blue, white and purple); Number crunchers will appreciate the full number pad on the HP Notebook 15’s keyboard, but the typing experience is merely adequate. The Chiclet-style keys have just 1.1 millimeters of travel, which caused me to bottom out immediately as I typed. The keyboard has virtually no flex, though. That helped me reach a typing speed of 108 words per minutes with a 1 percent error rate on the 10fastfingers.com typing test, which is about average for me.