Feature:1. HD display screen: Fresnel mirror screen adopts optical HD zoom technology, which can enlarge HD by 3 to 4 times, effectively preventing 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 HD smartphone. Add a Bluetooth keyboard and use it to play HD.4. High quality materials: ABS plastic and Fresnel mirror, 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 iPhone or an Android phone, the projector screen of the magnifying glass can be used with your device. 3D visual pleasure can avoid visual fatigue.