Weight tuning set: Built-in 8 weights for your adjustment at the bottom, simply add or remove the weights as you prefer to get the best gaming experience.
Fire key: short press to double click, long press more than 2 seconds to switch triple click,light flashes 3 times represents successfully switched.
LED Light Modes Switch: A total of 13 kinds of light mode ,long press more than 2 seconds to turn off the lights.
Quick thumb function: fast forward or backward when browsing the web,forward of backward at the same folder window.
