It’s very portable to use. This incredible device has been specifically designed to clearly amplify the picture of your mobile phone and give you a wonderful 3D experience. Perfectly compactible with more than 90% of the mainstream mobile phone, and other mobile phones, Limit the shielding of harmful blue light, reduce eye injuries suffered more than 90%. Radiation protective, blocking more than 90% of mobile phone radiation to protect our eyes. Lens thickening, the use of Optical-grade material to increase the anti-friction lens.