USB microscope with magnification from 25 to 200 x, connects to a computer

Color : Black 
Type : Wired 
Magnification : 25 - 200X 
LED Qty : 8 
Image resolution : 640 x 480; max 1600 x 1200 
Frame Rate : 30f/s under 600 Lux brightness 
Focus Range: 15 - 40mm 
Operation System : Windows XP / Windows 7 
Power supply : USB 
Product weight : 0.088 kg 
Package weight : 0.299 kg 
Product size (L x W x H) : 11.2 x 3.3 x 3.3 cm / 4.40 x 1.30 x 1.30 inches 
Package size (L x W x H) : 19.5 x 12.5 x 5 cm / 7.66 x 4.91 x 1.97 inches 
Package Contents: 1 x Microscope, 1 x Holder, 1 x CD, 1 x 1 x Calibration Ruler