Focus Adjustable Eyeglasses -3 to +6 Diopters Reading Glasses with Continuously Adjustable Magnification for Clear Vision. Easily turn the dials to adjust focus for distance or reading as needed. Ready to use in under a minute, these glasses are ideal for backup use in various situations. EXTRA DURABLE AND IMPACT RESISTANT: Made from polycarbonate material with a flexible frame that fits most head sizes. Impact-resistant lenses are designed to withstand drops and everyday wear. EASY TO USE: No prescription or optometrist visit required. Simply rotate the dials to adjust the lens power until vision is clear. No tools needed—adjustment is quick and convenient. VERSATILE PERFORMANCE: Featuring Alvarez lens technology, these glasses support multiple vision needs. Suitable for activities such as reading, watching TV, and driving. STYLISH DESIGN: Sleek, unisex frame design complements all face shapes and offers a look. INSTRUCTIONS: 1. Locate the adjustment dials on the side of each lens. 2. Wear the glasses normally. 3. Cover one eye and adjust the dial on the opposite side using the visible eye for reference. For example, cover the left eye and adjust the right lens dial, then cover the right eye and adjust the left lens dial. 4. Adjust each lens individually. 5. If vision remains slightly blurry, repeat the adjustment process as needed. With a simple twist, customize the focus to suit your vision needs at any distance. Quantity: 1 piece