Samsung NP Rv509 A06IN Laptop is very good in features as well as in look. It is easy to operate and carry. The cost of laptop matches with features. Samsung is having large network in the world with good service. It’s screen size 15.6 with maximum display resolution is 1366*768. My friend using since three years so far there no problem. It’s battery working good make it debatable long time. Overall this is best laptop to use. Samsung name is sufficient to buy quality product like this.