Instruct: Classify the given review into positive or negative sentiment.
Query: Prone to Interference

Pro: Microsoft's ergonomic keyboards are great for style and comfort. The larger-than-average mouse provides hand support that helps reduce repetitive strain injury. The materials are durable and the devices are well-constructed. Driver installation is easy and automatic.Con: The transmitter used to communicate between the USB dongle and the keyboard/mouse is too weak. While it has a high theoretical range, any electronic device between it and the keyboard and mouse can severely interfere with their function. A monitor placed near the wireless keyboard is enough to cause intermittent disruption, resulting in lost keystrokes or even an unresponsive keyboard for a few seconds. As a programmer it was not usable for me, as I imagine it would be for any heavy typer. I would strongly recommend the wired alternatives from Microsoft.