Specification:
Light Source: LED;
Resolution: VGA  640 x 480;
Aspect Ratio: 4: 3;
Brightness: 12 lumens;
Input: USB connector, it can be connected with computer for presentation;
Power supply: USB
Effective Focal Length: 14.30 mm;
Focusing: Manual focus in rotation adjustment;
Projection Distance: 0.2m to infinite;
Image Size (normal operation):  0.2--3m
Contrast Ratio: 50 : 1;
Distortion: 1%;
Uniformity: 85%;
Color Gamma (comparing to NTSC): >50%;
LED Power Consumption: 2.5W  700mA driving current;
LED Life: 20,000 hours;
Operating Temperature: 0 ~ 50 Centi degree;