The build quality, The removable battery, The dual battery charging function, The Suction power, The filter cleaning system, The portability, The usability time of each battery per charge, The included charging/storage base
It does exactly what it is designed to do and what is promised by the manufacturer
This is the second vacuum of this type that is used regularly in my household. The other of this type is a famous and expensive brand that is referred to as the leader in devices of this type, (I will still not mention the brand but I am sure you can gues...
