You could use one of those chargers
* '''UCH10'''
Qualcomm Quick Charge 2.0 standard
* '''UCH12'''
Qualcomm Quick Charge 3.0 standard
* '''UCH12W''' same as UCH12 but without the USB cable
In a short sentence you can use any charger that has at least a 2.5 amp output and that should charge your Xperia X a lot quicker.
'''''Warning! If you're phone doesn't support quick charging, quick charger may reduce the battery life.'''''