What's difference between Asus UL20FT "XA1" and "B1"?

[Powervano]

Lately Asus has released the refresh to its UL20FT-A1 - XA1 and B1 builds.

Unfortunately though, I could not find exact info on those versions. There is simply nothing about them on Asus's website.

As I saw from other websites, XA1 has new i3-380UM, 2 GB RAM and 320 GB HDD.
B1 has i3 380UM, 4 GB RAM and 500 GB HDD.

But is that all? Asus website says that there is 5600 mah battery versions of UL20FT but which one is that? The old UL20FT-A1 was definitely the 4400 mah battery version but is it same with XA1 and B1?
And is there Bluetooth on any abovementioned models?

Any help would be much appreciated

 

[Zap]

Since these are retail models, there will be a different model number for every different combination of parts. Bigger HDD? Needs a new model number. More RAM? Needs a new model number.

Note that sometimes there is also a warranty difference. For instance Asus has sold the same notebook hardware configuration with different part numbers, one having a two year warranty and the other having a one year warranty.

And is there Bluetooth on any abovementioned models?

If it isn't mentioned, it probably isn't there.