Call Support lines open 8am-5pm CST Mon-Fri (closed Sat & Sun) (800)858-2121 US & Canada(972)298-2669 Local Email All emails will be answered within 24-48 hours on weekdays Email Support Service Request Please submit your request in the appropriate form below: Loupe RepairPrescription Change Manuals User instructions for loupes, lights, and other accessories View Manuals Datasheets Product brochures and specifications View datasheets Videos Detailed instructions for using your loupes, lights and accessories See all videos Warranty We are proud to offer lifetime coverage for all Q-Optics loupes Learn More