DEFAIRY Plastic Adjustable FD & PD Function Magnet Trigger Virtual Reality Headset Google Cardboard 2 for Video Game Movie Playing with Smartphone iPhone Samsung LG Moto HTC (Black) Lightweight, durable construction with versatile design. The maximum suitable size of phone: 160 x 87 x 12mm (LxWxT). Recommended phone size is 4.7 -6.0 inch. Lens adjustable in both pupil distance and focal distance. Regulate the lens forward or backwards to get best focal point for clear image. It is suitable for all people in different eyesight(especially shortsight people). Push the lens handle on top of VR headset left/right to get the best Pupil Distance to matching for users' eye distance for best 3D experience, furthermore, pupil distance helps to change the FOV value for different application and movies. The magnet trigger let users interact with the screen easily. Pull the magnet trigger sliding through the slot up and down to activate a click on touch screen. Four axis phone holding system grasp the phone tightly in a soft way, as well, the holding system make sure your phone in the center place vertically and horizontally for better VR experience.