20X & Glass Lens: Our magnifying glass is crafted from high-quality double-layer optical glass (not resin or acrylic), scratch-resistant and ultra-clear for daily use. Up to 20X true optical magnification and an 85mm lens provide a wider field of view, even very small print can be magnified clearly, allowing visually impaired seniors to read any size text. 3 Mode LED Lights: The 21 built-in LED lights provide extra brightness to ensure a better reading experience, even at night or in dark places. There are 3 lighting modes (cold, warm, and mixed), which is helpful for students and the elderly to reduce eye strain in low light. USB Rechargeable: Never worry about rapid battery consumption and the hassle of frequent battery replacements for seniors. This magnifying glass has a 1200 mAh rechargeable battery, providing 8-10 hours of reading time at the highest brightness on a single charge. It can be fully charged in 1.5 hours. Upgraded Touch Switch: Our 21 LED magnifying glass uses a touch switch to make your daily use convenient. The first touch opens the 18 LED cold light, the second touch opens the 7 LED warm light. The third touch turns on both warm and cold lights, and the fourth touch turns off all lights. Easy to use for children and the elderly.