HD display screen: Fresnel mirror screen adopts optical HD zoom technology, which can enlarge HD , effectively preventing radiation generated by mobile phone. Sliding design: stretch the round button, and then the screen appears. This sliding screen mode helps to protect the screen and is more suitable for transportation. Simple operation: the screen amplifier doubles the screen size, so you can make the most of and videos on your HD smartphone. Add a Bluetooth-compatible keyboard and use it to play HD. Excellent compatibility: whether you are for or an Android phone, the projector screen of the magnifying glass can be used with your device. 3D visual pleasure can avoid visual fatigue. Applicable places: living room, office, bedroom Function: Bracket, Magnification, Eye Protection Colour:Black Material:ABS+Acrylic Size:14inch Package Contents: 1 x Phone screen amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.