CM Storm Havoc Mouse and Control-RX Surface Review
On the left hand side of the Havoc are the LEDs that indicate where in the DPI range you currently are. Bright enough to be spotted without being distracting.
It's great to see that when you switch profiles the whole of the Havoc changes colour. We've seen a few mice that only change in certain places, so having the entirety of it adjust to the colour chosen is nice.