▲▲▲Single Eye Observation - With close focal length:2-5CM , it is suggested to use a single eye for viewing at area only because focus will fail when using both eyes lenses at the same time.
✔ 4 Interchangeable Lens - 10X 15X 20X 25X magnifications can be interchanged quickly and put in corresponding lens storage box. Bonus: A sticky pen and a cleaning cloth are included to remove dust, dirt & fingerprints to enhance the view for the small parts.
✔ 2 Adjustable LED Lights - can help work in low-light conditions (6 * button batteries Included). Easily rotate the LED switch cover about 30 degrees clockwise from the dot to lamplight mark to turn on the light.
✔ Detachable Bracket and Headband - Comfortable eyeglass frame or switch to headband to ensure tight wearing and reduce fatigue for long time use.