We haven't had a chance to fully test this product yet, but we've assembled this helpful overview of relevant information on it.
Mad Catz Rat M
The Mad Catz Rat M is a customizable mouse utilizing Bluetooth 4.0 wireless technology and a tracking laser sensor with 6400 DPI. The Rat M additionally features compatibility with both OS X and Windows operating systems, as well as a USB adaptor.
Bluetooth 4.0 Wireless Technology
6400 DPI Laser Sensor