The headlights are sourced from imported lamp beads, with high brightness, long life, low power consumption, and no electromagnetic interference. Brightness adjustment-Rotate to adjust the brightness for easier use. The headlights and magnifying glass can be adjusted up and down freely. Height Adjustable-- Compact and stylish design, portable weight, easy to use, 3 moveable joints ensure holder can be stretched to any height according to your needs when used as a desktop magnifier. With comfortable ergonomic handle suitable for children, adults, seniors, hobbyists and professionals. Handheld or Desktop -- Magnifier glasses can be used as a desktop magnifier by stretching its holder and placing it on the desk. It also can be folded to serve as a hand-held magnifier to realize wider application range.