I bought this product due to several reasons:
First, it is way more practical in terms of size and presentation when compared to other dongles. Most cases, they are boxy, bigger, need to be attached to your strap, require traditional batteries and have a patch cable that goes faulty after some time.
A big plus with this product is that it is just a dongle... you plug it and it is attached to your guitar, period!
Small, lightweight, easy to operate... you just need one button to be pressed multiple times to scroll through the different available frequencies. On top, not only are both dongles powered by a lithium battery, but the charging cable that comes with it allows for both dongles to recharge simultaneously.
I don't give it 5 stars because my amp is next to a piece of furniture and sometimes the signal breaks down even if I am only 3 meters away (it can also be because my wireless router is just right there and causes interference, but the product should still work with no signal breakdown at short distances)