Purchase unhappy !!

Entertaining .. if we omit postage ... for poor quality!
Looking at the comments from other customers I can only point out one thing: this is a product that can buy with confidence because its operation is not guaranteed and is played "in haphazard" ...
An electronic defect to the one I received .. the spring is of poor quality and in bad condition ... contact with the battery is defective and does not allow the use of the mouse. Poor design ... Sometimes it is possible to find a positioning of the batteries to allow the use of the device but this is not here .. I can move a little and see the battery indicator light will then go off while I did not move the pile ... It is impossible to find a "System D" to get to use the mouse. I bought another mouse a little more expensive at the same time (for me) and the difference is obvious, correct positioning of the batteries in the compartment, the connectors springs do not move ... !!
A detail: the USB connector does not fit fully into the slot when it is under the mouse so it tends to cling (with possibility of scratches) to what would be nearby if they put it in his "bag" with his laptop while traveling

I can only see a very bad choice of purchase
The person to whom I intended the mouse will have to do without it because it is useless and I am more than disappointed with my purchase (I am a computer technician training and I had mice in the hands of all kinds and at all prices, this is the first time I see one of such poor quality that it is impossible to use it !! This is also why I did not risk a bad surprise by buying this material, even at that price, a distance selling website).
A 5.50 including postage mouse well I think we can find much better !!

I contacted the seller about it, he made a comeback but the pictures requested therefore be of no use to follow him on purpose, I emphasize all the same communication with it which is a good point but does not alter the quality of the equipment sold.