Turn your smart phone into the ultimate 3D machine for 3D games and split screen movies; works with over 300+ iOS/Android virtual reality apps on Apple App Store and Google Play Store. Search VR or some other related keyword on Google Play or APP store. A truly fun and immersive experience for any age. Pupil Distance (PD) and Focal Distance (FD) both can be adjusted to get the best 3D immersive experience. Pupillary Distance adjustment range: 55mm – 75mm. A person with Myopia less than 600 degree can use this item without wearing glasses. Note: The focus adjustment is NOT independent for each eye. The front cover is adsorbed by magnet, easy to be removed, keep the phone cool while using, and great for ventilation for long use. You can charge and use earphone simultaneously through the ventilation holes on both sides.