Good mouse 34

Having received this mouse a few days ago, I was taken aback by the mismatch of the manual (in fact some leaves in English) and materials including trigger the pairing. However, after an internet search, I found a good manual.
Recognition by the mobile (in Win 8.1 pro) was done without difficulty and that connection is well persistent. The mouse is well in hand, and small for the price, corresponds perfectly to my needs.
I still do not know the life of the batteries.
In short, except the doc, it's perfect.