Dying breed of mice

Unfortunately, one gets hardly large (= handy, ergonomic) mice with Bluetooth connection, only those with the small USB receiver. Having previously like mice from Microsoft used to be but no longer produced.
When the mouse now and then logs off, or loses its connection, it is not to blame! The problem is the "energetic rigor" in the notebook (even if I think that saved a few milliwatts not weigh so arising problems). The solution is to switch off the function "PC, the peripheral in the power saving mode shift" or mutatis mutandis formulated in the Device Manager. Sometimes the search is lengthy, sometimes you have to install new drivers. Just google.
1 point deduction gets the mouse gets the mouse for the sharp edge at the "light slot" on the left, next to the left mouse button. And at least in my copy, the left and right buttons when pressing feel differently.