Q1. How many brightness mode ? A1. 2 brightness mode. double click the button can change the brightness. Q2. What to do If I received mouse pad with break point on led strip? A2. Due to the characteristics of the led strip, if there is a break point, it will produce bright spots and uneven lighting. You can solve this problem by simply folding it back by hand. If it still not OK, Please contact customer service.. Q3. What to do if my mouse pad has Wavy edge,/uneven edge ? A3. Due to transportation problems, all mouse pads need to be rolled up and shipped. If they are in a curled state for a long time, it will have a certain impact. Please try to straighten the curled side in the opposite direction, or press it with a heavy object for a while. Can solve this problem. If not OK, Please contact customer service.