#1	Ergonomic contour design Minimizes pain and discomfort in forearm muscles from twisting which can cause carpal tunnel syndrome
#2	Builtin 125 large trackball with optical sensor accurately and precisely tracks with less muscle movement for maximum comfort
#3	East to install programmable driver friendly user interface that lets you change button assignments DPI sensitivity scrolling speed
#4	Removable trackball Can Be easily removed by pushing the trackball from underneath the mouse
#5	Adjustable DPI switch adjustable cursor moving speed from 4004 800 DPI
#6	Ergonomic contour design Minimizes pain and discomfort in forearm muscles from twisting which can cause carpal tunnel syndrome
#7	Note In case of Wireless mouse the USB receiver will be provided inside or along with the mouse