Features: Glasses magnifier for reading, or viewing coins and stamps. Ideal-embroidered loupes, glasses magnifier for needlework, crafts and map reading. Light-weight. It is used for reduces eye, neck and shoulder fatigue, which is caused by long-time lower head-works. 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. Sculpture and appreciation of artworks-. Work of dentists, tailors, embroidery, etc. Inspection and repair of cameras, clocks, etc. Specifications: Material:Plastic Size:Approx.18.5x17.5x3cm/7.28x6.88x1.18inch Product model: 11537DC Product material: ABS frame, four sets of optical acrylic lenses (strengthened treatment) Product magnification: 1.5 times, 2.5 times, 3.5 times and 5 times. Lens focal length: 330mm, 200mm, 142mm, 100mm. Power supply parameters: 50Hz, 5V and 0.1W Battery parameters: 300mAh rechargeable lithium battery Lighting source: two pure white LED lights. Include 5pcs magnifying glasses set and 1pcs usb cable. 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. Package includes: 1x Magnifying-Glass 1x Instructions