**Guarantee Period: 1 year** -Easy to adjust and with excellent stability. -Laser-printed scale lines, are accurate and intuitive. -Ensure high resolution, clear and sharp field of view. -Ergonomic design with optional materials and colors. -Besides protective shields, prescription lenses can also be fitted by an optometrist. -Our loupes are high strength and light. -Multi-layer coating technology, anti-fog, anti-scratch, anti-glare, to ensure more visible light through the glass. **For further product information, please contact chat support**