Specifications: Item Type: Headband Magnifier Magnification: 2X, 35X, 45X, 55X Material: Plastic, Acrylic Product Size: 320 x 130 x 30 mm Large Lens Diameter: 125 x 75 mm Light Type: 1 piece LED Light Lens Plates: 4 pieces Power Supply: 3 LR927 (batteries NOT included for safety) Features: 1. LED light provides ample illumination in any setting. 2. LED light adjusts vertically and horizontally and can be detached for independent use. 3. Headband easily adjusts with a knob. 4. Automatic voltage booster converts 2 AAA batteries (3V) to 45V for sufficient light. 5. Up to 55X magnification with a combination of fixed flip-up and monocle lens plates. 6. CE Factory Audit ISO9001:2000 certified. 7. High quality at wholesale price. Applications: 1. Precision manufacturing and processing, gardening, maintenance. 2. Miniature circuit boards, machinery parts, camera repair, electronics, chemical products, computer repair. 3. Suitable for dentists, veterinarians, and beauticians. 4. Jewelry making, sewing, embroidery, stamp collecting. 5. Reading, drafting, crafts, fishing, hobbies, etc. 6. Excellent promotional gifts. Attention: Batteries are not included for safety reasons.