foldable mobile phone 3 times 3d enlarged screen magnifier eyes protection display 3d video screen amplifier expander stand bracket

folding and angle-adjustable design, small volume, convenient for carrying with on your business travel, holiday journey and so on. in order to achieve the view and optimal amplification effect and the definition, you can adjust the distance from mobile phone frame to the lens and angle, adjust focal length, lens angle. the watch angle is vertical to the lens, a distance of 0.5 meters it the watch distance.