Perfect mouse. On connecting directly found by computer as two mice and possibility to connect. One connection is mouse on bluetooth 3 and the other is connection on bluetooth 4. So you can switch with the button on the bottom for which computer to use. And by pushing the button on the bottom of the mouse there will burn a green LED to show which connection you choose. The far most in front is connection 1. You push the button once more the second is burning etc. Delivered with a tiny USB connector, so you can eventual connect even a third and fourth computer. And so I use also one keyboard on two computers. Deliverance took 4 days in China and the airplane. Accepted and passage thru border took a whole week in my country. But after all it arrived at my home in 10 days. Great! Happy :)
