Lenovo thinkpad x1 carbon this is a very bad laptop is a slow laptop perform bad processor very bad procesor is a slow it was bad performance it was not a good and lag but worest I think no one not buy the laptop it was worst laptop I have ever seen ram was not good screen pixel not good laptop speakers not a good performance keyboard wasnot working processer are bad wifi not connect coretly, laptop are many times not working browsing experence are not good, track pad not working well battery charging not lastlong, bulid quality not good, usb port not working project wasnot good laptop service center was not good.