World's First Mouse with Grooved Buttons Your fingertips rest in a shallow groove on the buttons. This patented innovation secures the mouse in your hands and makes moving it much more precise. Extended Lip Prevents Rubbing An extra wide lip along the bottom edge prevents the last finger from rubbing the desk. Easy-To-Reach Thumb Buttons Smartly-placed thumb buttons are both within easy reach at the top and bottom of a contoured thumb rest. Adjustable Pointer Speed A speed button behind the wheel allows convenient adjustment without releasing your grip from the mouse. Pointer Speed Indicators Up to four lights show pointer speeds from low to high. Laser Sensor A laser sensor ensures reliable tracking on most surfaces. Copy/Paste and Much More* Configure the buttons to perform nearly any function you wish