Got pros: Light, tenacious, the sensor does not break, it holds a charge perfectly! Interchangeable mics, no need to peel off the legs. The connection is stable over 2.4 channel, there is also Bluetooth, but I did not check it for a long period of time. Cons: The case is matte - dirt sticks to it perfectly, but it is not so easy to wash off. The software at first seemed raw (it offered to register a โnewโ mouse all the time, the backlight synchronization flied), but recently these problems have disappeared.