0.3 Million USB Digital Microscope with 6 LEDs, Lens Diameter: 4.9mm

1. Focal diatance: 1-2.5cm
2. Interface: USB 2.0
3. CPU 1.8g or above
4. Memory above 256M
5. System: Windows SP4/XP/ VISTA /7 / MAC OS 10.5 or above