Acer Aspire Es1_521 notebook is the very very nice for user of the notebook. It is very comportfil to used it. the acer company is the best of the laptop . I’m using 2 year ago the acer company product. the quality and the durability is the best of the laptop market . I request to all of the person to used the acer product. the is very low price and got high quality product from the acer . The product are best product of the market.