laser mouse running smoothly on any surface.The revolutionary laser location technology is used on a well performed optical mouse ,which extremely improved mouse technology. Mouse can work at more kinds of surface through laser' clustering . Optical mouse became workless on sliding or smooth high class wooden desk. There are many advantages using laser as its light source. Its waveleng this different from usual visible light, comparatively short. However, no matter how smooth the mouse is, it will not happen mouse cursor disappearer. in addition, sensitivity of its is higher than optical mouse using shining diode by its radium cluster.Mouse location has been large improved through the new laser location technology.Sensor 1200dpi can catch picture of 5.8million pels every second and track acceleration up to 15G each second.Scanning frequency for every second is 6500Auspicious. size(mm) 109*60*36 weight(kg) 0.0918 Resolution(dpi) 1600dpi Key-press life 150Million Safe certificate CE,FCC Scanning speed 1500-3000/s Easy scrolling under:Compatible with windows 95/98/Me/NT4.0/2000/XP Connector PS/2,USB,U+P