Dimensions: 99*57*38mm Space saving on desk, ideal for travel users Laser sensor technology registers more surface detail, enabling you to use The mouse on more surfaces than a standard optical mouse( such as glass, mirror) T makes you enjoy 20 times as sensitive as the normal optical mice Scroll light: Blue, green, red, orange Various color shells available Interface: USB, PS/2 and combo for options, retractable USB port available Power rating: 5V, 40mA maximum Operating force: 75+/-20g Compatible with Windows 98/2000/ME/XP/NT, Mac