This laptop is one of the best one in laptops but when we are using internet buffering problem compare TO ANOTHER ONE. This is good one from side of money. when we can start the video starting very late rest good like picture quality. SOUND QUALITY IS VERY NICE I BOUGHT THIS LAPTOP BECAUSE THE SOUND GOOD. WEIGHT IS NOT GOOD AND EASY TO HANDLE AND FOR CARRYING PURPOSE VERY GOOD.IT IS GOOD FOR OFFICE WORK AND STUDENTS I THINK LENOVO SERVICE CENTERS ARE AVALIABLE EVERY WHERE IN INDIA.ONE BEST COMPANY LENOVO AFTER SONY SO I FAVOUR TO BUY THIS ONE MAIN BATTERY BACK UP VERY NICE COMPARE ANY OTHER LAPTOP THIS IS PLUS FOR LENOVO