Excellent wireless keyboard. Just plug in the small usb dongle and off you go. Has always worked smoothly and often at long distance too. Can go over 10 feet away but as with all these kinds of wireless devices they are more consistent when kept at a sensible distance. Has many great short cut features plus volume controls etc. Great battery life and power management abilities. Red indicator light warns you when battery is getting low. Mine usually last a good year. Two simple AAA types. New ones included. See.