no scrolling

Contrary to what precise description of this article, it has no function "4D" allows scrolling.
I could have known it: if the "conventional mouse" function was effectively replaced by the scrolling with each click left (as claimed by the description and the manual), this would be a "happy" mess.
Well, it rhymes with "ripped off". Funny.

The notice also states that this feature is only available on the model "4D". This is the one where I ordered but it was not mentioned on the packaging. How, then, whether this is the right model sent to me ...

That'll teach me to bring an article that China is hardly worth the postage.
A small scam to avoid.

For the rest:
- The wire is fairly long but very thin, leaving me doubt its durability.
- The ball is smooth, small and thumb slips a little above; not very accurate but can be used with ...

The only application that does not require much precision as the web, I do not see the value of this object without the scrolling function.

*** After 3 days of use: ***

- The touch is not the most pleasant and the pointer could be more specific but we made it.
- 1 am the trigger buttons (left click): well done for most uses except for the double click, very difficult to perform. the left button is a button 2, and the right button 3 (right click).
- My wrist is no longer applied and pains (due to the use of conventional mice) have almost disappeared, so I will continue using this mouse while looking better.

for the price, it's still "correct". damages for scrolling and double click ...