Although asus is very well known and good company but this product of asus is very bad and cheap quality. I want to share my persronal experience about this vivo book which is very bad. I baught this vivoboon on 17oct2017. It is heaving a wifi and bluetooth connectivity issue. I visited the service centre many time but issue not resolved yet. Once they are saying that this is the issue of operating system which is installed but after updating issue is still their. Now they ready to repair it but repairing time is too much about 10 to 15 days. I am very dissatisfied with this vivobook and service too.