The speed of delivery of this product is very impressive. I ordered this on Sunday afternoon and received it on Tuesday afternoon!. The mouse itself is very stylish and light. Once plugged in, it connected automatically. It has a very smooth move when in use but I am not sure if it is too smooth or not. My previous mouses do have resistance when using but this one is really really smooth. The size is perfect for someone with small hands. With this price, it is quite worth it. I just got it today so I am giving this a 4* as I am not sure if it is going to last long or not but so far so good.