Eyeglass frame for hand free use. Lens surface is treated with strengthening process to reach the hardness of H5 degrees. For any strain on lens surface, just flush them with water then dry the moisture with facial tissue.
Glasses bracket can be changed to headband to ensure more comfortable and tight wearing.
Movable lens slot,Lens and holder part adopt internal/external meshing structure.
Nose bridge holder, Lens angle and LED Light source angle are adjustable.
Lens external specification:85mmX28.5mm. Lens of changing five kinds of different magnifications.