In an ideal environment, your mouse can operate up to 30 feet (10 meters) away from the receiver in a clear line of sight.

• If you're not getting this distance, try these suggestions:
• Replace the battery/batteries or make sure your mouse or keyboard is fully charged.
  Move devices that emit radio waves or could cause radio interference away from your work area. (Examples: cell phones, radios, wireless routers, and microwaves.)

To determine if something in your environment is shortening the operating range, try using your device in a different environment to see if the distance improves. If it does, look for other possible sources of interference that you can remove from your work area.