3X High Power Magnification: Truly 3X without optical distortion. After years of research and upgrading, the magnifying glass is made of a single layer of aspherical mirror glass instead of double glass lenses, which is more scratch-resistant with extremely high definition. USB Charging: The newly upgraded magnifying glass does not need batteries, which reduces environmental pollution. It has a built-in 1200mAh rechargeable lithium battery. USB charging port, can be connected to a mobile power supply, car charger, wall charger, you can take it anywhere without worrying about charging, it can read at least 10 hours on a single charge, which reduces the trouble of not being able to read without batteries and saves more money. Ultra Bright 21 LED: The LED magnifying glass is designed with 21 3 color modes (white, yellow, warm). Just click a button, you can adjust the brightness to ensure a better reading experience even at night or in dark places, which is very helpful for patients with