I bought a cheaper bluetooth rechargeable mouse and regretted it. This one is much better because it has a flat bottom (the power button is flush with the bottom of the mouse). This means it won't scratch your desk or laptop (unless you're using a mouse pad). Also, the battery lasts much longer than the battery I originally bought. I bought this mouse for another laptop and have been using the same battery for over a year and the rechargeable ones need to be charged weekly. It costs money, plus it comes in beautiful colors!