SKYWAY LED Big Zoom Vision Magnifying Glasses Eyewear USB Rechargeable Magnifier Eyeglasses for Elder Black 16X

Specification: Frame material:pc Rechargeable way:USB rechargeable Battery style:50mA(3v) Width of the forehead frame :148mm/ 5.82" (approx.) Lens Height:44mm/ 1.73" (approx.) Lens Width : 66mm/ 2.59" (approx.) Leg Length :145mm/ 5.70" (approx.) Bridge :17mm/ 0.66" (approx.) Weight:40.0g Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! How To Use LED magnifying glasses is simple and easy to use- just place on your head like a normal pair of glasses and turn On/Off Switch to light. LED magnifying glasses can be worn alone or over prescription eyeglasses or contacts. It should be worn near the tip of your nose, NOT in the same position you would wear normal glasses. Wearing Over Eyeglasses When wearing over prescription glasses or sunglasses, leave space between LED magnifying glasses and your other glasses to find the best focal length for you. Finding the Focal Length Hold an object about 12-16 inches away from LED magnifying glasses. Adjust until object is in focus. Care&Cleaning To remove light dirt and fingerprints,use the soft optical cleaning cloth. For very dirty lenses, use water or a neutral detergent to wash them. DO NOT use heavy force to clean lenses as this may cause scratching.