Features Specs High quality with superior optics Light, portable and easy to operate. This will reduce fatigue on your eyes and provide comfortable vision continuously. Product parameters: Product name: Dental Magnification: 3. 5X Working distance: 420mm Depth of field: 80mm Field of view: 60mm Packing size: 185*125*77mm Features: 1. Large field of view, fast positioning 2. Long depth of field, high resolution 3. High-end optical design 4. Multi-layer antireflection coating on the lens 5. Two-way adjustment of the interpupillary distance is more convenient 6. It is easier to fine-tune the focus of the left and right lens barrels 7. Ergonomically designed headband is more comfortable to wear 8. Unique Optical Coating reduces reflection and improves image clarity. Caution: 1. Do not look directly at the sun when using the magnifying glass. 2. Keep the device dry, do not use it in any humid place. 3. Do not attach or clean the glass optics with a hard or dirty object. 4. Put the device in the box after use. We use high-quality logistics methods to ensure the speed of logistics and the quality of transportation.