Features: Not dizzy-. According to the size of the-head, the elasticity - can be adjusted freely.It has the characteristics of anti-scratch and easy to clean-. It-is suitable for unlocking and field observation. It is-suitable for learning and office. Inspection, processing, installation and repair of various operations in the electronics industry. For-Facial skin, pore observation, manicure-, ear picking. in the beauty industry. Sculpture and appreciation of artworks-. Work of dentist, tailor-, embroidery. Inspection and repair of cameras, clocks. It is-usually used-by people when reading, especially suitable for reading in the dim - light for the elderly and students. Power-supply model: USB rechargeable (full charge can be used continuously for 8-12 hours). Package Includes: 1x Magnifying-Glass 1x Instructions Specifications: Material:Plastic Diameter:Approx.20cm/7.87inch note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.