SUPER ULTRABOOK!
this ultrabook is really great!
For those who are wondering, it's the UX3405M (I don't know why it's marked BX3405 ).
super light, the numeric keypad integrated into the trackpad is a great idea
the screen is beautiful, the battery is solid (I only plug it in at night)
it's very fast and super quiet
in short, I don't regret my choice