that's a very simple, elegant looking mouse. it reminds me a little of the deathadder but not as boring. what's the red button for? and are the top buttons under the wheel dpi selectors?
The red button Corsair calls a "sniper" button. It changes your sensitivity to 400 DPi (configurable) when pressing it, and then it reverts back to whatever DPi you're usually at when you let go. It's supposed to help when in-scope to have more precise control. And yes, the two arrows toggle through 5 presets of DPi (all of which are customizable).