Features :

Light Weight, compact and very convenient to carry anywhere.
Reliable, Tough and Smooth Metal corrugated pipe enables to turn toward any direction.
Need none of External Electric Supply, directly fetch electricity from USB output.
Power consumption less than 40 mA.
Long Life LED that can work for more than 8,000 Hours under any conditions.
High-Bright White LED can ensure clear view at Night and do not effect other people all around.
Work in complete privacy with your laptop without disturbing others.
Note: 7 days vendors warranty against any manufacturing defect