13 inch 3D Phone Screen Magnifying Amplifier Portable Mobile Cinema Display Enlarged Magnifier Expander 
Description:
This is a mobile phone holder for eye protection, which can enlarge the screen of the mobile phone. 
This product is suitable for mobile phone models under 7 inch. 
The design is based on the principle of ergonomics, and fine-tuning the use distance can meet the needs of different users. 
Abandoning injection molding technology, made of ordinary lenses, using pressing technology to produce the top Fresnel lens, making the picture clearer.
The combination of fashion and scientific and technological innovation can create a smooth technical appearance, more in line with the aesthetic needs of modern people.

Specification:
Material: ABS+ Acrylic Lens 
Viewing Distance: Best Distance 3-4m/9.84-13.12ft
Function: Magnification, Eye Protection, Radiation Protection
Magnification: 3-4X Times
Color: White, Black

Note:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3mm measuring deviation due to manual measurement.

1 X Phone Screen Amplifier