ماوس M220 خفيف و سريع الاستجابه يشتغل على السوني HIGH-END OPTICAL ENGINE WITH PRECISE POSITIONING , 6-SPEED DPI IS OPTIONAL AND THE MOUSE MOVEMENT SPEED CAN BE ADJUSTABLE , THE TAIL OF THE MOUSE IS COOL AND WITH COLOURFUL LED PRESS BACKLIGHT BUTTON TO ADJUST LED AFFECT , HP STANDARD ONE-YEAR LIMITED WARRANTY FROM DATA OF PURCHASE .