Features: Adjustable pupil distance and sight distance, satisfying different groups of people. Easy to install your cell phone onto the 3D glasses. Protective mat and adjustable board can clamp your phone firmly. Head mount to put around your head and enjoy a visual feast comfortably, allowing you staying in bed or sofa as you like. Make yourself being an exclusive 3D theater with this unique smartphone glasses. Suitable for Android and IOS smartphones that screen between 3.5~6 inches. Usage: 1. Open the four boards slowly according to the size of your cell phone. 2. Open 3D movie or games you want to watch or play in your cell phone. 3. Put your phone onto the slot, then close the boards, make sure your phone is clamp firmly. 4. Adjust the two lens to fit your eyes at a best effect for viewing. 5. Wear the head band around your head and start to immersed yourself in the 3D movie or exciting games. Note: This 3D smartphone glasses of working principle is via split screen to reach 3D effect.