1. display screen: Fresnel screen adopts optical zoom technology, which can enlarge by 3 to 4 times, effectively radiation generated by mobile phone. 2. Sliding design: stretch the silicone round button, and then the screen appears. This sliding screen mode helps to protect the screen and is more suitable for transportation. 3. Simple operation: the screen amplifier doubles the screen size, so you can make the most of movies and videos on your smartphone. Add a keyboard and use it to play . 4. materials: ABS plastic and Fresnel , strong and durable, even higher definition. Raise frame adjustable angle of view. Non slip silicone pad protects and stabilizes the phone. 5. Excellent compatibility: whether you are for phone, the projector screen of the magnifying glass can be used with your device. 3D visual pleasure can avoid visual fatigue. Specification: Material: ABS plastic + Phoenix lens Magnification: 3-4 times Functions: amplification, eye protection, radiation protection, stand holder Product size: 260 * 174 * 9mm Color: Black, White, Red Packing: 1x screen magnifier(Excluding mobile phones and other props) Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!