1.21 Inch Large Size: Universal screen magnifier for laptops/tablets/mobile phones. 19.6 x 4.3 inches (50x36.5 cm) with a 21-inch screen. 2. The screen magnifier uses high-definition optical technology to magnify the phone screen 3 times, relieving the discomfort and visual fatigue caused by focusing on a small screen for a long time. 3. The screen magnifier is made of high-definition optical lens material, and the wooden frame bracket is environmentally friendly and can adjust multiple viewing angles. You can enjoy 3D vision away from the screen and effectively prevent the harm of mobile phone radiation to the human body. 4. Easy to use, the screen is not easy to deform. The simple and stylish design makes this product a good choice for your holiday gift to friends or lovers. It is a wonderful gift for family, seniors, girls/boyfriends. It can be used as a technology gift, and is more suitable for seniors to watch movies and