Adjustable 8 Lens LED Head Wear Headband Head Strap Magnifier Watch Repair Magnifying Jeweler Loupe with Bright Light + A keychain Convertible lens with 8 different kinds of magnifications. This magnifier has the slot for inserting two lens, which makes monocular lens (with 3 different magnifications) change into 6 different kinds of magnifications and makes binocular lens (with 5 different magnifications) change into 11 kind of different magnifications. Lens and light source holder are moveable, ensures the alternating use of two eyes to relieve visual fatigue. And they can be moved to the middle place for work requiring two eyes. The sliding groove surface is marked with calibration tails so that the head lamp can be localized to the certain position. Adjustable lens angle and light source angle. Adjustable headband to free your hands. Application range: reading, drawing, handicrafts, textile, watch repairing, jewelry appraisal, stamps collecting, antiques appreciation, etc.