... 2048(H)*1536(V)(3.00MP);Magnification of Optical System: 0.45X;Capturing Microscope Image and Showing Live Video on PC ... : Ø23.2, Ø30, Ø30.5mm;PC System Required: Hardware: USB2.0 Connecting Socket;CPU: Intel P4,EMS Memory: 256M,Hard Disk ... Mend sp4),or winxp (with Mend sp2),Vista,directx 9.0 electron eyepiece with USB and software for microscope use