1. Lens Size: 4 inch (100mm).
2. Lens Material: glass (normal lens and optical lens optional).
3. Magnifying Power: 3 diopter, 5 diopter available.
4. Auxiliary magnifying power:12 diopter.
5. Light Source: circular T4 12W fluorescent energy-saving bulb.
6. Power Supply: 110-120V/220-240V/100V.
7. Power Cord Length: 5 (1.5m).
8. High quality electronic ballast.
9. Colors Available: white, black, silver, etc.
10. Electrostatic discharge safety available.