PREMIUM DURABLE ABS and metal are safe, odorless, non-toxic, environmentally friendly and durable. This eyeglass magnifier can be independently adjusted, allowing you to quickly change from normal viewing to magnified viewing. HEAD-MOUNTED DESIGN The hands-free head-mounted magnifier is an ergonomic eyeglass frame, which can effectively prevent the magnifying glass from falling off and reduce the pressure on the bridge of the nose, thereby reducing fatigue in long-term use. You can also free your hands and focus on the object you want to observe. 2 ADJUSTABLE LED LIGHTS 2 LED lights are adjustable for better illumination, allow working even in low light environment (batteries buttons included). MULTIPLE USES The 20x magnified view is ideal for watch repair, jewelers, jewelry, stamps and coin appraisal. It is widely used in jewelry, watchmaking, photography, printing, dentistry, education, ophthalmology, geology, biology, etc. Amateur naturalists may also need it to observe or identify species. Features: Materials: ABS + metal + optical lens LED light power supply: CR1620 button cell batteries (integrated) Magnification: 20x Light source: 2 LED lights Lens diameter: 21mm / 0.8inch Size: 165*150*45mm/6.7*5.9*1.8in Black color Type: Magnifier Function: Help in repairing watches, appraising jewelry, stamps and coins, etc. Package includes: 1 x pair of glasses magnifier only