I chose this mouse because I wanted a good bluetooth mouse for my SURFACE PRO 3 has only one USB port and the RAT mice are super I also own a RAT 5. the mouse is great without the dongle (c 'means that the mouse works without any bluetooth connect to PC) or via usb but good mini-sensor is not at the same sensations and reactivity with a wired RAT 5 by cons for the office is top, the Gaming also but I prefer my RAT 5. A great product that is expensive but I bought on promotion. Bluetooth is a real plus. Independence I am confident with the low energy version 4.0 bluetooh very economical. 1 year term announced if off the mouse after use.
Review after 6 months use: first change the batteries, a battery life of 6 months (with normal use and a few oversights to turn off the mouse after use), no defects in hardware everything is good!
