About This [LONG WORKING DISTANCE GLASS LENS]: Our Taiwanese 4-inch (100mm) glass plano-convex lens offers easy viewing with its low magnification. It minimizes environmental light source reflections, providing an expanded field of vision. Featuring a true power of 1.6x/2.5D and a focal length (working distance) of 40cm. [4 TONING & 5+3 DIMMING & FAST MAX ADJUSTMENT]: OHBIG offers 4 color temperature settings: warm white (3000K), neutral white (4000K), day white (5900K), and cool white (6500K). It features 5 brightness levels via AA batteries, plus 3 Boost modes available through USB-C. It provides 780 Lux at 12cm on level 5 and 2800 Lux on level 8. Long press for 4 seconds to reach maximum brightness. Easily control 32 lighting modes with two quick button presses. [MUSEUM-GRADE Ra>90 RING LIGHTING]: OHBIG includes a 24pcs+24pcs SMD-LED Ring Light module with a diffuser, ensuring even, low glare illumination when reading. It's ideal for viewing reflective materials like metal, providing natural color rendering with Ra>90 LEDs used in art museums. This enhances visual quality, especially for the visually impaired. [UNIVERSAL 1/4" SCREW-HOLE DESIGN FOR ARTISANS]: Add the arm parts for hands-free precision work or comfortable reading. The OHBIG handle features a 1/4" standard screw hole at the bottom, allowing connection to an external accessory bracket. Adjust it to various angles to prevent long-term discomfort due to poor posture. This feature also benefits student during cognitive training, operating teaching aids, or finding a comfortable angle for writing. [POWERED BY AA BATTERIES & USB-C SAFE PLUG-IN DESIGN]: OHBIG operates on AA batteries and can be used continuously by plugging in a USB Type-C cable. In battery mode, it will automatically shut down after 30 minutes to conserve battery life for workers. For the safety of seniors, the battery cannot be charged via USB. Overview Brand : H HWATANG Color : Black Batteries Required? : No Item Weight : 0.7 Pounds Lens Material : Glass
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