• 1200 DPI Optical Sensor
• Reliable optical technology-no mouse Ball
• Agree with the palm arc. comfort for either hand
• Scroll wheel for easy navigation
• 3D internet wheel Faster wheel scrolling & keying Two unite one design
• no mouse pad required-gives smooth .precise motion on virtually any surface
• Never use scrollbars again
• Length of cord : 29.13" (0.74 meters)
• size of optical mouse :75x39x21mm (LxWxH)
• Easy installation
• no driver required ,plug & play
• support USB and PS/2
• suitable for outdoor / Home/Office .
• compatible USB 1.0/1.1/2.0

O/S supported:
Windows 98, 98SE, 2000, ME , XP , 2003 , Vista , WINDOWS 7