Xulu Trackball Mouse

With the smooth and precise rollerball mouse, you no longer need to move your arm for the movement of the cursor. Your thumb will control the cursor instead. It will effectively reduce fatigue and strain for your wrist and arm. Xulu Trackball Mouse Description: Ergonomic Thumb Mouse: With the smooth and precise rollerball mouse, you no longer need to move your arm for the movement of the cursor. Your thumb will control the cursor instead. It will effectively reduce fatigue and strain for your wrist and arm. Note: The backward and forward button is not fully compatible with MAC Adjustable Angle Design: Unique adjustable hinge allows you to customize the trackball angle from 0 to 20 degrees according to your needs for a more natural, comfortable hand position and less muscle strain. Note: it will enter auto sleep mode if you don't use it for a few minutes to save battery and click it, the mouse will enter working mode again 4 RGB Lighting Mode: You can adjust 4 RGB color effects