I took it out of the package to test on my laptop and make sure it was functioning properly. All the buttons work fine. What you see in the pictures is what you will get. I will allow a 10 day return on this item if returned in original condition. 

PixArt ADNS-9800 Laser Sensor Module Any electronic device is only as good as the sum of its parts. In gaming mice, a sensor is the most important piece of the puzzle. And with Mad Catz' R.A.T. PRO X, you need not be afraid of your sensor becoming outdated. Hot-swappable modules help ensure that as sensors inevitably improve, R.A.T. PRO X improves with them. But it's not just the sensor that you can modify. Almost everything you can touch is also interchangeable and adjustable. Nimble, robust, and immensely customizable, R.A.T. PRO X is the world's most advanced gaming mouse.